New Stainless Steel Punching Multi-function HSS Step Drill Bit Hole Opener Metal Drill

Brand new and high quality High speed steel material, more durable. No need for a pilot hole, can automatically deburr holes as you drill. Working with water cooling, can effectively extend the life of bit, drilling speed 250--400 recommended. Widely used to cut holes in a variety of material like steel, wood, thin iron, aluminum alloy, insulation boards, PVC sheet , ect. Specifications: Type: Cone Drill Bit Material: High speed steel 4-12mm 5steps: 4-6-8-10-12mm 4-12mm 9steps: 4-5-6-7-8-9-10-11-12mm 4-20mm 9steps: 4-6-8-10-12-14-16-18-20mm

Package Includes:1 x Step Drill Bit

Note Please allow 1-3mm error due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.