طقم لقم مثقاب غاطسة احترافية مكون من 4 قطع أسود/فضي

Including a mini hex wrench. Detachable and the length is adjustable. Apply to the drilling machine that has collet or joint. These countersink drill bits works great in wood and wood chip. It includes 4 sizes in one countersink drill bit set(6#, 10#, 13#, 16#).