Description of Senrob Automatic Center Aluminum Titanium
Package Includes: 5 x step drill bits,1 x automatic center punch,1 x aluminum case. Wide Applications: 50 hole size choices to cut through iron, aluminum, PV and insulating plate as well as other types plates easily. Durable Materials: ability of oxidation resistance, no rust and wear, long service life with titanium and cobalt plating coating. Unique Shape: straight grooved is for excellent heat dissipation and chip removal, v-type opening design ensures cutting faster and smoother. Automatic Center Punch: center punch with spring inside creates an automatic, high-impact force and the top red cap could save more effort.