The RAM-B-174-152U consists of a 1" dia. ball rubber coated LED spotlight with brake/clutch reservoir and handlebar/rail mount. The base consists of a 1" diameter rubber ball, hardware for mounting to both brake/clutch reservoirs and rails that are 0.5" to 1.25" in diameter. The mounting hardware for brake/clutch reservoirs include both standard and metric mounting bolts. Multiple pivot points, rubber ball and socket technology allows for almost infinite adjustment and perfect positioning angles. Information HARDWARE INCLUDED: (2) M6 x 55mm Hex Bolts (2) #1/4-20 x 2" Hex Bolts (2) 1/4"-20 x 2.5" Hex Bolts (2) 1/2" Spacers (2) 1/4" Split Lock Washers (1) 1/4"-20 U-Bolt for .5" - 1" Rails (1) 1/4"-20 U-Bolt for 1" - 1.25" Rails (2) 1/4"-20 Nylock Nuts (2) Rubber Caps (1) U-Bolt Spacer BULB SPECIFICATIONS: PAR36 12 Volts DC 9 Watts 1900 Lumens Sealed Beam 30-Degree Spot Light Frosted Lens 4500K Color Temp CLAMP RANGE: .5" - 1.25" diameter SOCKET TO SOCKET LENGTH: 3" BALL SIZE: B Size (1") WEIGHT CAPACITY: Standard Use: 2 lbs Heavy-Duty Use: 1 lb MATERIALS: Marine-grade aluminum Rubber PACKAGING TYPE: Poly Bag WEIGHT: 0.51 lb Hardware Breakdown RAM® LED Spotlight with Ball - RAM-B-152B RAM® Double Socket Arm - B Size Medium - RAM-B-201U RAM® Motorcycle Brake/Clutch Reservoir & Handlebar Ball Base - RAM-B-309-7U Additional Hardware Locking Knobs for B Size Socket Arms RAM® Pin-Lock™ Security Knob for B Size Socket Arms - RAP-S-KNOB3U RAM® Key Lock Knob with Steel Insert for B Size Socket Arms - RAM-KNOB3LSU RAM® Pin-Lock™ Security Knob with 7-Pin Pattern for B Size Socket Arms - RAP-S-KNOB3-7U RAM® Add-A-Ball™ Accessory Ball for B Size Socket Arms RAM® Add-A-Ball™ Accessory Ball for B Size Socket Arms - RAM-B-273U