It is made of super-hard high-speed steel with a diameter from 4 mm to 40 mm and a combination of steps from 4 steps to 13 steps, including spiral grooves and straight grooves two types in total. It i
Introduction of Spiral flute step drill
SSAS
HSS step drill with spiral flute
Introduction of Straight flute step drill
SSHS
HSS step drill with spiral flute
Introduction of Step drill set
Page copyright zhejiang xinxing tools co., LTD 《Telecommunications and information service business license of the People's Republic of China》 Number: Zhejiang ICP No. 10206161
Number: Zhejiang ICP No. 10206161
