<b>8 Piece Multi Material Drill Bit Set, Mgtgbao Upgraded Carbide Masonry Drill Bit set (3-12mm)</b><br><br> <b>Mgtgbao Drill Bit Usage :</b><br> ➊Cross cutter head design can Suitable for drilling hole easily penetrate material ( tile,glass) and reduces breakout.<br> Note: Please do not use this drill bit to drill the <b>Thick iron plate</b> and <b>Tempered glass</b><br><br> <b>New upgrade, dry-working alloy drill:</b><br> ➋The traditional drill bit needs to add water to work, but this drill bit can directly feed the drill without adding water. ( When drilling, use water for cooling. The drill bit will last longer )<br><br> <b>New electrophoretic paint process:</b><br> ➌The drill bit adopt a new electrophoretic paint process, abandoning the traditional spray process, processing anti-rust treatment, and make the drill bit more durable.<br><br> <b>1/4” Hex shank: </b><br> ➍Drill bit handle design for Hex shank, can clamped on the drill more firmly<br><br> <b>Drill Bit Specification:</b><br> ✿Material: YG6X hard alloy<br> ✿Color: black drill bit<br> ✿Handle:1/4” Hex shank<br> ✿Process:electrophoretic paint<br><br> <b>8PCS Dill Bit Dimension:</b><br> 3mm (1/8”) (Dia) x 73mm(L)<br> 4mm (5/32”) (Dia)x 74mm(L)<br> 5mm (3/16”) (Dia) x 75mm(L)<br> 6 mm (1/4”) (Dia)x 76mm(L)<br> 7mm (9/32”) (Dia) x 77mm(L)<br> 8mm (5/16”) (Dia)x 78mm(L)<br> 10 mm (3/8”) (Dia) x 82mm(L)<br> 12 mm (1/2”) (Dia) x 95mm(L)<br><br> <b>Packing Includes:</b><br> 8x Multi-function Drill Bit<br> <b>Important Note:</b><br> Do not use impact mode of drills or hammers when use the Multi-material Drill Bit.<br> The drilling speed of the Multi-material Drill Bit should be slow, especially in the beginning of drilling.<br> Please try to keep the drill vertical and add WATER or COOLANT for lubrication when drilling. <br><br> <b>Warranty:</b><br> When you have any problem about the drill bit, please contact Mgtgbao customer service team in first time, we will help you solve it in 12 hours.