Dayree Countersink Drill Bits Center Punch Tool Sets, 6 pcs 90 Degree HSS 6 mm-19 mm Five-blade Chamfering Cutter and 1 pcs Brass Automatic Punch with 1/4'' Hex Shank for Wood Quick Change Bit

Description

The automatic center puncher provides an automatic spring-driven strike when the surface is pressed, and the print head can be adjusted to adjust the striking force The whole Drill Bits is using high-frequency quenching for heat treatment, high-density grinding, with titanium to prevent rust. High Hardness, Good Toughness, High Concentricity Suitable for DIY, Home and General Building/Engineering Using. Great for Sinking 90 Degree Holes into Wood and Soft Metals Countersunk Screws and Fixings Package include: 1 x 6mm Drill 1 x 8mm Drill 1 x 9mm Drill 1 x 12mm Drill 1 x 16mm Drill 1 x 19mm Drill 1 x Automatic Center Punch How to use: 1. Using the automatic center punch to mark work piece with a dimple, creating a starting point. 2. Connect the drill bit, then start to work following the starting point.