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Step Drill Stepped Drill Bits Industrial Grade Speed Steel Spiral Cutting Tools Drilling Holes for Aluminum Stainless Steel Pp Wood Black
1.Enhanced Wear Resistance: The speed steel step drill features wear and fatigue resistance, offering extended durability. Its solid structure...
£73.72
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OnBuy

5Pcs Stainless Steel Perforated Step Drill Bit Set BPVYPYPGV-BLACK
Includes 5 stainless steel step drill bits with perforated design and four spiral flutes for efficient chip removal. Each bit features multiple graduated diameters, offering a total of 43 common hole sizes in one set. Made from high-speed steel (HSS) and coated with titanium for increased hardness and wear resistance. Designed for clean, burr-free drilling in sheet metal, aluminum, copper, plastic, and wood. Compatible with standard power drills—ideal for HVAC, automotive, electrical, and DIY projects.
£70.07
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Amazon Marketplace - Shenzhen Aoxikang E-commerce Co., Ltd.

3PCS M35 Cobalt Step Drill Bits, 4-20mm 9-Step Cone Cutter BDCPCQZYL
Product Sizes: 9-step design (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm); flute length: 55mm; shank diameter: 6.30mm; material: HSS M35 (HSS-Co5) cobalt steel. Features 1/4" hex shank, with 1/2" square to 1/4" hex adapter included; black straight flute Reliable Design & Efficient Drilling: 118° X-type split point for precise positioning and anti-slip; hex shank ensures tight clamping. Black spiral flute enables smoothly chip removal, reducing resistance and clogging. M35 cobalt steel offers durability; cone structure meets multi-hole size needs, saving time Package: Includes 3PCS HSS M35 step drill bits (black straight flute), 3 hex shank adapters, and 3 sets of retaining ring & pin (rubber O-ring + lock pin). The free retaining ring & pin set prevents sockets from falling off the adapter. The adapter converts 1/2" square drive (for impact wrenches) to 1/4" hex shank – essential for impact wrenches, optional for standard electric drills. Versatile Uses: Suitable for drilling aluminum, iron, steel (≤5mm thick), and 304 stainless steel (≤1mm with hand drill, ≤2.5mm with bench drill). Ideal for metalworking, electrical, plumbing, DIY, and construction. Compatible with impact wrench, bench drill, hand drill, and cordless drill. Notes: Keep water cooling during operation to extend bit life. Do not use on concrete, tiles, glass, or other hard materials. Check device compatibility before ordering.
£59.69
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Amazon Marketplace - QINWUHOME
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