Helps to avoid drilling position deviation while slippage or damage to the drill bit.
Square section striking head with knurled body and polished ends, make a small dot on the workpiece, as a marker (such as central or circumferential line when drilling), or other point of the center line position, facilitating process.
Made from heat treated alloy steel for increased durability, high hardness, wear-resistant and durable.
Suitable for proofing hole before steel, aluminum, copper and other materials drilling of drill positioning.
Comes with 3 pieces with different tip head size including 1.5mm, 2mm, 3mm for multiple purposes.