6PCS 4-Blade Saw Tooth Eccentric Drill Bit 4/5/6/8/10/12mm Alloy Drill Bit Four-Edge Serrated Drill Bits for Glass/Tile/Concrete

High-concerned chemical : None Brand Name : Shunmaii Origin : Mainland China DIY Supplies : TiLing Material : Cobalt Steel Alloys Type : Metal Drill Bits