Min. Order Reference FOB Price
300 Pieces US$1.00-3.00 / Piece
Product Description
Concept of twist drill bit Twist drill is a kind of tool similar to twist shape, and twist drill is a tool for drilling by rotating. Because the spiral groove of twist drill has 2 grooves, 3 grooves and more grooves, there are many sizes of drill bits. But the most common one is 2 slots. Twist ...