Product Name: Vacuum Brazed diamond core drill bits 5/16", 5/8" thread
Specification:
Diameter 8mm, diamond length 10mm, total length 62mm.
Quantity:
1 Piece 8mm
Application:
Dry/Wet Drilling porcelain tile, marble, stone, granite, masonry, brick.
Feature:
1.Wax inside for cooling, dry drilling without water is ok.
2.Vacuum Brazed technology and high quality diamond grains provide high efficient working and long time performance.