Archer PRO 4\ in. Diamond Turbo Core Drill Bits for Concrete Drilling
- ✔Size --1pc 1 3/8 inch core drill bit (35mm) ,diamond height 10mm, total length 100mm,diamond grit #25/35,working length 80mm,5/8-11 thread of the granite drill bit.
- ✔Wide Application --Diamond drill bit are worked great for dry drilling holes through Granite Marble Hard Stone Reinforced Concrete Brick Block Counter Top,Using water could prolong the lifetime.
- ✔Super Quality Raw Material --Using laser welded technology,improve the performance of segments,avoid segments off during drilling process.The vacuum brazing protective layer on the surface of the core steel offers clean cut & steel core protection.
- ✔Fast and Smooth Drilling --Creates a fast and stable drilling, you could drill smoothly with no broken edges.
- ✔Machine --angle grinder (Pay Attention! If you drill through thick granite ,we recommend you to add enough water to help cooling the bits,which could prolong the lifetime).