Made of strong hard tungsten steel,not easy to bend and break. with higher wear resistance and higher efficiency
Shank: 3mm, Length 45mm, shapes: 30º/45º/60º/75º/90º/105º/120º, total 7 pieces
Professional for jewelry maker, used with pneumatic impact engraving machine, air hand graver
High concentricty and high speed, the bit can cut clean without any ragged edges, High precision and convenient to use, practical accessory for jewelry processing