Vender Countersink Drill Bit Set Wood Drilling Quick Change Drills Tool Tools al mejor precio

Description: 7 Pieces HSS Drill Bits set includes 7 drills, 7x countersinks, 7x stop collars and 1x allen wrench for drilling holes 3mm, 3.5mm, 4mm, 4.3mm, 4.5mm, 5mm, 5.5mm for different size needs Special designed HSS steel counter sleeve countersinks & counter bores hole. Adjustable Countersink Drill Bit length for various length screws simply by loosening and tightening the screw. Pre-drilling and countersink to drive screws flush with the material surface or deep hole counter boring for driving screw heads below the surface. Specification: Material: HHS Size: 3mm, 3.5mm, 4mm, 4.3mm, 4.5mm, 5mm, 5.5mm Package Includes: 1 Set of 7 Pieces Drill Bits 1 Piece Hex Key