8/12mm diamond coated core bit for ceramic marble porclain with 1-1/4" Shank thread power tool drilling for Kitchen Bathroom Decoration

Diameter:8mm,12mm

Connection:1-1/4" shank

Grit:35/40#

Total length:80mm

Working length:35mm

Diamond height:10mm

Features&Benefits:

1.Dry drilling for porcelain, ceramic, dekton, marble,granite, stone, mosaic glass,brick etc

2.Excellent performance, fast and smooth drilling,less chipping

3.High strength diamond provide much longer working life

4.Suitable for gun-drill among other portable charging type tools.