.iron-theme{ --black:#0b0b0b; --gray:#6b7280; --red:#c1121f; --red2:#e11d2e; --border:#e5e7eb; --soft:#f8fafc; font-family: Arial, Helvetica, sans-serif; color: var(--black); max-width: 1100px; margin: 0 auto; line-height: 1.7; } .shell{border:1px solid var(--border);border-radius:16px;overflow:hidden;background:#fff;box-shadow:0 10px 28px rgba(0,0,0,.08);} .top{padding:24px;} .kicker{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--gray);margin:0 0 8px;} h1{margin:0;font-size:30px;font-weight:900;text-transform:uppercase;} .sub{margin:12px 0 0;font-size:15px;max-width:100ch;} .stripe{height:8px;background:linear-gradient(90deg,var(--red) 0%,var(--red) 70%,var(--red2) 100%);} .content{padding:24px;background:var(--soft);} .card{border:1px solid var(--border);border-radius:16px;background:#fff;padding:20px;margin:18px 0;box-shadow:0 8px 22px rgba(0,0,0,.06);} h2{margin:0 0 12px;font-size:19px;font-weight:900;text-transform:uppercase;display:flex;align-items:center;gap:10px;} h2:before{content:"";width:10px;height:10px;background:var(--red);border-radius:2px;} ul{margin:0;padding-left:20px;} ul li{margin:8px 0;} table{width:100%;border-collapse:collapse;font-size:14px;} th, td{border:1px solid var(--border);padding:10px;text-align:left;} th{background:#f3f4f6;font-size:12px;text-transform:uppercase;font-weight:900;} .callout{border:1px dashed rgba(193,18,31,.5);background:rgba(193,18,31,.06);border-radius:12px;padding:14px;font-size:14px;margin-top:12px;} Precision Wood Boring • Triple Wing Design • Professional Door Preparation Southeast Tool 3 Wing Door Drill Bits The Southeast Tool 3 Wing Door Drill Bits are engineered for professional woodworking and door preparation applications requiring clean, accurate, and repeatable boring performance. Designed with a precision triple-wing cutting geometry, these industrial-grade drill bits deliver smooth cutting action, reduced tear-out, and improved hole quality in wood and composite materials. Built for demanding production environments, the Southeast Tool 3 Wing Door Drill Bits are ideal for lockset installation, door manufacturing, cabinet production, and architectural woodworking applications where clean bores and dimensional consistency are critical. Southeast Tool 3 Wing Door Drill Bits Applications Commercial and residential door manufacturing Lockset and hardware installation operations Architectural millwork and woodworking facilities Cabinet and furniture production environments Precision boring in hardwood, softwood, and composite materials CNC and manual woodworking machine applications Production drilling operations requiring clean edge quality Industrial woodworking shops demanding consistent bore accuracy Designed for high-precision woodworking applications where clean hole quality, smooth cutting action, and repeatable boring accuracy are essential. Southeast Tool 3 Wing Door Drill Bits Specifications Product Type 3 Wing Door Drill Bits Manufacturer Southeast Tool Shank Diameter 1/2" Overall Length (OAL) 6" Cutting Design Triple Wing Precision Cutting Head Application Door Boring & Woodworking Material Compatibility Hardwood, Softwood, MDF, Composite Wood Products Available Cutting Diameters (CED) 9/16" through 3-3/4" Replacement Components Replacement Drill & Replacement Screw Available Southeast Tool 3 Wing Door Drill Bits Size Chart Part Number CED Shank OAL SDR295 9/16" 1/2" 6" SDR305 5/8" 1/2" 6" SDR303 11/16" 1/2" 6" SDR300 3/4" 1/2" 6" SDR306 13/16" 1/2" 6" SDR310 7/8" 1/2" 6" SDR315 15/16" 1/2" 6" SDR320 1" 1/2" 6" SDR325 1-1/16" 1/2" 6" SDR330 1-1/8" 1/2" 6" SDR340 1-1/4" 1/2" 6" SDR350 1-3/8" 1/2" 6" SDR360 1-1/2" 1/2" 6" SDR370 1-5/8" 1/2" 6" SDR380 1-3/4" 1/2" 6" SDR390 1-7/8" 1/2" 6" SDR400 2" 1/2" 6" SDR410 2-1/8" 1/2" 6" SDR413 2-1/4" 1/2" 6" SDR414 2-3/8" 1/2" 6" SDR415 2-1/2" 1/2" 6" SDR424 2-15/16" 1/2" 6" SDR425 3" 1/2" 6" SDR430 3-1/4" 1/2" 6" SDR440 3-3/4" 1/2" 6" SDR-DRILL Replacement Drill SDR-SCREW Replacement Screw Southeast Tool 3 Wing Door Drill Bits Features & Performance Triple-wing cutting geometry helps produce smoother, cleaner bores with reduced splintering and tear-out. Precision-ground cutting edges improve cutting efficiency and dimensional consistency. Heavy-duty 1/2" shank design provides stability during demanding drilling operations. 6" overall length supports controlled boring depth and versatile woodworking applications. Wide diameter range available from 9/16" to 3-3/4" for multiple door and hardware preparation requirements. Optimized chip evacuation helps reduce heat buildup and improves cutting performance during extended operation. Industrial-grade construction designed for professional woodworking shops and production environments. Replacement drill and screw components available for easier maintenance and longer service life. Southeast Tool 3 Wing Door Drill Bits Safety Information WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to https://www.p65warnings.ca.gov/ or https://oehha.ca.gov/proposition-65/about-proposition-65 Why Choose Southeast Tool 3 Wing Door Drill Bits Professional-grade boring performance for woodworking and door production. Triple-wing cutting design for cleaner holes and smoother finishes. Wide range of cutting diameters to support multiple drilling applications. Heavy-duty construction built for production environments and extended use. Precision boring capability for accurate lockset and hardware preparation. Replacement components available for improved long-term value. The Southeast Tool 3 Wing Door Drill Bits provide industrial-grade cutting performance, clean hole quality, and dependable durability for professional woodworking and door manufacturing operations.
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