Key Features Drill Around Obstacles The 90 degree head lets you drill concrete where a standard rotary hammer will not line up. It is built for joist bays, corners, and other tight access spots that usually force awkward setups. 360 Degree Positioning The attachment rotates all the way around on the tool so you can clock it to the angle you need. That makes it easier to keep the hammer body clear of framing, walls, and overhead obstructions. Bosch SDS-plus Fit This Bosch right angle drill attachment is made for newer Bosch SDS-plus rotary hammers with a 50 mm collar. It gives you a clean way to keep using your existing hammer for tight-space concrete drilling instead of switching tools. Overview The Bosch RHA-50 SDS-plus Right Angle Attachment is a right angle drill attachment for Bosch SDS-plus rotary hammers that need to drill into concrete where straight-on access is limited. This is a rotary hammer attachment designed for tight-space concrete drilling. Model Number: RHA-50. If you are working between joists, near walls, or up against structural members, this attachment gives your compatible Bosch hammer a 90 degree drilling path without forcing a bad body position or a sketchy setup. The main reason this accessory matters is simple: it helps you get holes where the job demands them, not just where the tool happens to fit. The 90 degree angled design lets the bit reach into hard-to-reach locations, and the 360 degree rotation lets you set the working position to match the space. That means less fighting the tool, less repositioning, and a better chance of drilling the hole you need on the first try. On the job, that rotational adjustment is the feature that earns its keep. Tight-space drilling is never just about turning the bit sideways. You also need to keep the hammer body, handle, and cord clear of framing, block, ductwork, or overhead members. Being able to rotate the attachment around the tool gives you more workable positions, which is exactly what matters when you are drilling overhead or tucked into a corner. The Bosch RHA-50 SDS-plus Right Angle Attachment is built specifically for concrete drilling applications with Bosch SDS-plus hammers, and Bosch notes that the tradeoff for that convenience is a small reduction in impact strength. That is a fair and useful detail to know up front. In other words, this accessory is about access first. If you can drill the hole with the hammer in a normal straight position, that will usually be the faster setup. But when access is the problem, this attachment is the practical fix. Compatibility is where you need to pay attention. The RHA-50 is made for newer Bosch corded SDS-plus hammers featuring the 50 mm collar, including models 11253VSR, 11255VSR, RH228VC, and RH328VC. It also fits Bosch cordless models RHH181-1, 11536-C, and 11536VSR. Bosch also calls out non-compatible models, including 11250VSR, RH328VCQ, and RH432VCQ, so it is worth confirming your hammer before ordering. Physically, this is a compact accessory at 4.5 inches long and about 2.1 pounds. The housing is listed as plastic, which helps keep added bulk down when you are already holding a hammer in an awkward position. For an accessory like this, low added length matters because every extra inch makes overhead and corner work harder. This attachment makes the most sense for concrete drilling and anchor work where access is the real problem. General contractors, remodelers, electricians, plumbers, and mechanical trades running fasteners or drilling penetrations through concrete, block, brick, or cinder block in tight areas are the right audience. If you already own a compatible Bosch SDS-plus rotary hammer and occasionally run into spots where the body of the tool will not fit, the RHA-50 solves a real jobsite problem without making you buy a dedicated specialty tool. Reach Tight Concrete Drilling Areas This is exactly the kind of situation the RHA-50 is built for. When framing, walls, or overhead members block a straight drilling angle, the attachment lets the bit reach the concrete without forcing the full hammer body into the space. 90 degree head for drilling in hard-to-reach spots Designed for concrete drilling with Bosch SDS-plus hammers Set the Working Position You Need The full 360 degree rotation matters because access problems are rarely identical from one hole to the next. You can clock the attachment around the tool to keep the handle and motor housing out of the way. Rotates 360 degrees on the tool Helps line up the hammer for overhead, corner, and offset drilling Built for Compatible Bosch SDS-plus Hammers If you already run a compatible Bosch SDS-plus rotary hammer, this attachment is the direct way to add tight-space capability. It is a purpose-built accessory, not a generic workaround. Fits newer Bosch SDS-plus hammers with a 50 mm collar Compact 4.5 inch length keeps added bulk manageable What's in the Box (1) Bosch RHA-50 SDS-plus Right Angle Attachment Key Specifications Tool Type Right angle drill attachment Angle 90° Rotation 360° Length 4.5 in. Weight 2.1 lbs Material Plastic Package Quantity 1 Application Concrete drilling in tight spaces Compatibility Hammer PlatformFits newer Bosch SDS-plus rotary hammers featuring the 50 mm collar. Compatible Bosch Corded Models11253VSR, 11255VSR, RH228VC, and RH328VC. Compatible Bosch Cordless ModelsRHH181-1, 11536-C, and 11536VSR. Does Not FitBosch models 11250VSR, RH328VCQ, and RH432VCQ. Built For Concrete drilling Masonry Construction Remodeling Electrical rough-in Plumbing rough-in Overhead drilling Tight access work Pro Tip Before you start the hole, rotate the RHA-50 so the hammer handle and cord clear the obstruction, then lock in your body position. That saves you from getting halfway into the cut and realizing the tool body is what is actually blocking the rest of the stroke. Warranty & Support No warranty. Tool Nut's Take Tool Nut's Take Bosch RHA-50 SDS-plus Right Angle Attachment Solves an Access Problem Fast This is the kind of accessory that makes sense the minute you hit a hole location your rotary hammer cannot reach in a straight line. Who it's for: Bosch SDS-plus users doing concrete drilling in joist bays, corners, overhead spots, and other tight access areas. Why it stands out: The 90 degree head and 360 degree rotation do exactly what they need to do, and the Bosch-specific fit keeps it from feeling like a compromise accessory. Worth knowing: Bosch calls out a small reduction in impact strength, so think of this as an access solution first, not a full-time replacement for straight-on drilling. Common Questions What is the Bosch RHA-50 SDS-plus Right Angle Attachment used for? It is used to drill into concrete in tight or obstructed spaces where a standard straight rotary hammer setup will not fit. Does the attachment rotate for different working positions? Yes. It can be rotated 360 degrees on the tool to help you set the correct position for the job. Will it fit every Bosch SDS-plus hammer? No. It fits newer Bosch SDS-plus hammers with a 50 mm collar and Bosch specifically lists several models that do not fit. Does using this attachment affect hammer performance? Bosch states that it provides convenience with a small reduction of tool impact strength.
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