5-piece set for stone and tile drilling. Four quick-fit hex shank diamond drill bits and one carbide triangular positioning bit. Contents - Quick-fit bits: 6mm (two pcs), 8mm, 10mm. 6mm bit length 68 mm, diamond height 10 mm. 8mm and 10mm bits length 80 mm, diamond height 10 mm. Wax inside for cooling and dry drilling without water. - Carbide triangular positioning bit: total length 77 mm. Used to accurately align the diamond bits; not for drilling. Key benefits - Quick-change hex shank for fast tool swaps. - Dry drilling with built in wax cooling reduces mess and eliminates coolant. - Diamond coated edges provide durability on hard materials. - Triangular carbide bit offers precise starting alignment. Applications - Drilling holes in granite, marble, porcelain tiles, ceramic tiles, natural stone, and masonry. - Suitable for tile hardware installation, countertop work, or creating anchor holes in stone surfaces. Note - The triangular bit is a guide for positioning, not a drill bit.