Diamond Twist Coated Drill Bit Gushiraho Ibice 5

Ibisobanuro bigufi:

Ibisobanuro bigufi:

1. Nibyiza byo gucukura amabuye, imaragarita, ibirahuri nibindi bikoresho bya imitako
2. Ikozwe mu byuma byo mu rwego rwo hejuru; Hagati ya grit ya diamant
3. Harimo imyitozo 5
4. 45 ° Gutobora insanganyamatsiko yo gukuramo chip