Drillpro 3Pcs 3-12/4-12/4-20mm HSS Titanium Coated Step Drill Bits with Automatic Center Pin Punch

Description: Drillpro 3Pcs 3-12/4-12/4-20mm HSS Titanium Coated Step Drill Bits with Automatic Center Pin Punch Specification: 3-12/4-12/4-20mm Step Drill Bits: Brand: Drillpro Material: HSS / High Speed Steel Surface Treatment: Titanium Coated Shank Size: 1/4" Hex Shank Includes a five-step bit, nine-step bit and ten-step bit. Quantity: 3pcs The 3 Cutters Come in the Following Sizes: 4-12mm: 4mm,6mm,8mm,10mm,12mm 4-20mm: 4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm 3-12mm: 3mm,4mm,5mm,6mm,7mm,8mm,9mm,10mm,11mm,12mm Center Punch: Brand: Drillpro General type 6mm automatic center pin punch Material: Bit material: hss steel Main body material: tool steel Total Length: Approx 128mm Bit diameter: 6mm Features: 1. Including 1pcs center punch and 3pcs step drill. 2. Can use step drill to open hole before using the center punch. 3.It is very suitable for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc 4.Adjustable automatic center punch. Package Included: 1 x Center Punch 3 x Step Drill Bits More Details: