Diameter 25mm 1",diamond length 10mm,total length 65mm,Triangle shank. Vacuum dry/wet brazed diamond drilling bits Core bits with triangle shank. Can be used without water,Dry or wet drilling. Triangle shank design can be gripped tightly that won't slip out easily,used in 10mm (3/8 in) Hand Drill, Bench Drill. Multi-purpose drilling for granite & marble,masonry,concrete,tile/ceramic,stone,etc.

Professional Vacuum brazed diamond core drill bits tools,when you want to drill in walls,floor or somethere without cracking, Our porcelain diamond core drill bits will meet your needs in every details,they're precise and flexible.

Package include:2pcs bits diameter of 1" (25mm),2pcs storage box

Applicable Machine:Triangle shank locked firmly, suitable for any electric drill,hand drill,Bench Drill, preventing bits from slipping, improving your working efficiency.  When use Angle Grinder,please install angle grinder drill chuck.

Application:  Recommended:Masonry,Stone,Ceramic Tile,Porcelain Tile,Common Glass,Ceramic,Marble,Granite,Microlite,Quartz Stone.

Tools Matain:After using,keep the bits clean and hold them to our storage box, for a long lifetime.