8pcs/set. 19/25/35/51/76mm diamond drill bits: Total length 75mm, diamond height 15mm; workable length: 50mm. Grit: #35/40; 2"(50mm)Diamond chamfer bit: workable length 46mm; Chamfer angle: top angle 60 degree;Grit:#80/#100.4/5"(20mm) diamond finger bit: total length 65mm, workable length 35mm. Grit #50/60. 5/8"-11 female thread, used on 5/8” thread angle grinder. Recommended RPM: 6000; Maximum RPM:11000. Please don’t use the hammer mode if you use the drill bits on electric drill through the SDS adapter. Multi-use: Drill bits for drilling holes; Chamfer bit for enlarging or shaping the holes and edging grinding of applicable material. All bits are produced in vacuum brazed technology, longer life than electroplated drill bits. U Shape incision, reduce cutting resistance and improve drilling speed. Suitable for ceramic tile, porcelain tile, granite, marble,etc. Not recommend drilling concrete. Product Name: DT-DIATOOL Diamond Core Drill Bits Set Tile Hole Saw for Porcelain Ceramic Tile Marble Granite Masonry Stoneware
Quantity: 8pcs/set
Contains 5pcs dril bits+ 1pc diamond finger bit+ 1pc diamond chamfer bit+ 1pc sds adapter
Specification:

:19/25/35/51/76mm core bits: 5/8"-11 connection, total length 75mm; diamond height 15mm; max working depth 50mm.

4/5"(20mm) diamond finger bit: total length 65mm, workable length 35mm. Grit #50/60.

2" diamond chamfer bit: workable length 46mm; Chamfer angle: top angle 60 degree; Grit:#80/#100.
Application:

Wide application for porcelain ceramic tile granite marble stone masonry brick.
Feature:
1.Dry or wet drilling.
2.Vacuum brazed technology provides much longer working life than electroplated technology.
3.High quality diamond grain provide fast and smooth drilling.
4.Minimizing any breakage and safe for operator.
5.Less chipping, minimizing breakage, less heat generation, better finish quality.