Size: 4pcs(6mm,8mm,10mm,12mm) 5pcs(6mm,6mm,8mm,10mm,12mm) 10pcs(6mm) Features: -Alloy head material with stronger hardness. -Triangular handle design, operation more stable. -Fine grinding of the drill body, big slot design, conducive to chip removal, no damage to the tile wall. -Can be installed in the hand drill,electric drill,bench drill. -Widely used in ceramic tile, glass, brick wall, wood, etc. Specification: Material: Stainless steel Color: Orange + Silver Note: 1.When drilling hard material such as glass, porcelain floor tile, marble, granite, etc, please use water for lubrication. 2.Allow 1-2cm error due to manual measurement 3.The color of the items in the photos displayed on the computer monitor may be slightly different because the display is not calibrated the same