... .material:carbide tipped 2.appliable to hole cutting 3.diameter from 12mm-65mm 4. better endurance 5.multi-cut geometry Zhejiang ... . Europe and North America are our main markets,OEM available from us. 1. TCT annular drill, 19.05mm universal shank for ... , to improve removal of chips and keep less resistance.6. The specifications from the Φ61mm ~ Φ150mm, depth of cutting 50mm, 75mm, 100mm ...