Features 1、This product is used to drill the hinge hole on door and window. 2、High positioning accuracy, will not shift during drilling. 3、Drilling chips fall from the top of the borehole and flow out from both sides of the borehole for automatic discharge. The drill bit will not get stuck. 4、Unique design, the best choice for DIY and professionals. 5、Ideal for drilling of hinge, hardware parts and the occasion when accurate positioning hole is required. Specification Item Type: Hinge Hole Puncher Drill Bit Specification: 1 x 5/64 Inch: Hole diameter is about 2mm, use 2.2-2.8mm self tapping screws 1 x 7/64 Inch: Hole diameter is about 2.8mm, use 3-3.5mm self tapping screws 2 x 9/64 Inch: Hole diameter is about 3.5mm, use 4-4.5mm self tapping screws 1 x 11/64 Inch: Hole diameter is about 4.5mm, use 5-5.5mm self tapping screws 1 x 5mm: Hole diameter is 5mm, use 5.5-6mm self tapping screws 1 x 13/64 Inch: Hole diameter is about 5.2mm, use 6-6.5mm self tapping screws 1 x 1/4 Inch: Hole diameter is 6.35mm, use 7-7.5mm self tapping screws Package List 8 x Hinge Hole Drill Bit 1 x Hex Wrench 1 x Center Punch