10-Piece HSS Coated Triangle Twist Spiral Drill Bit Set for Enhanced Performance

Description: YG8 hardness alloy drill bit, well abrasive resistance Deep groove chip removal more smoothly Triangle handle design for avoiding dropping Compatible with electric hand drill, Lithium electric drill and bench drilling machine Application: ceramic tile, concrete, iron, copper, plastic, wood board, etc Specification: Color: golden Material: hard alloy Size Chart: 6mm(1/4 inch): Drill bit diameter: 6mm Cutter length: 54mm/2.12 inch Shank diameter: 4mm/0.15 inch Drill total length: 100mm/4 inch 8mm(1/3 inch): Drill bit diameter: 8mm Cutter length: 66mm/2.59 inch Shank diameter: 6mm/0.23 inch Drill total length: 113mm/4.44 inch 10mm(2/5 inch): Drill bit diameter: 10mm Cutter length: 71mm/2.79 inch Shank diameter: 7mm/0.27 inch Drill total length: 118mm/4.64 inch 12mm(1/2 inch): Drill bit diameter: 12mm Cutter length: 70mm/2.75 inch Shank diameter: 9mm/0.35 inch Drill total length: 120mm/4.72 inch Package Includes: 10 piece twist drill bit