Item specificsMaterial: High Speed SteelUse: Metal DrillingDIY Supplies: MetalworkingProduct Description:These self centering drill bits put hinges right where they should be in the center4 of the most often used sizes for carpenters, cabinet, furniture makers and other wood working tradesEasy to use and installPositioning accuracy, will not shift, the chips will automatic discharge from the hole on either side of the top of the drill, not stuck drillMaterial: Brass, HSSColor: SliverNote: Due to the difference between different monitors, the picture may not reflect the actual color of the item Thanks for your understanding..Type: Center Drill Bit Packing List:1Pc Door And Window Hinge Hole Opener