What's Included 8x Core Drill Bits (1/4", 5/16", 3/8", 1/2", 3/4", 1", 1-1/4", 2") 1x 10mm Thread Finger Bit 1x 5/8-11 Male Thread to SDS Adapter SpecificationsCore Drill Bits: Diameter 6/8/10/13mm — 35mm max working depth, 10mm diamond height, 62mm total length, wax-filled core for cooling. Diameter 19/25/32/51mm — 50mm max working depth, 15mm diamond height, 75mm total length. Arbor: 5/8-11.Diamond Finger Bit: 10mm diameter, 50mm workable length, 5/8-11 thread, 75mm total length, Grit #50/60.SDS Adapter: Converts the connection of diamond bits from 5/8-11 to SDS.ApplicationDry/wet drilling for porcelain tile, granite, marble, stone, masonry, and brick. Recommended for use with an angle grinder.Features Minimizes breakage and is safe for the operator High-quality diamond grain provides fast, smooth drilling Vacuum brazed technology provides a much longer working life than electroplated technology Operation Tips Do not use these drill bits with hammer mode Only use on a corded drill — cordless drills don't provide enough power Intended for tile drilling only, not the material behind the tile For horizontal drilling, apply gentle pressure; for vertical drilling, the weight of the machine provides sufficient pressure Start at a 45-degree angle, drill until the hole begins to form, bring the drill upright, then continue drilling while swaying the machine in a circular motion