Uxcell a16051700ux0151 21mm x 85mm Woodworking TCT Forstner Drill Carpenter Hinge Cutter Boring Bit<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Product Name: Hinge Boring Bit; Material: Tungsten Carbide</li><li>Weight: 67g; Package Content: 1 x Hinge Boring Bit</li><li>Boring Diameter: 21mm / 0.83"; Overall Length: 85mm / 3.3"</li><li>Shank Size(Small): 8mm x 30mm / 0.3" x 1.2" (D*L); Shank Size(Big): 10mm x 40mm / 0.4" x 1.6" (D*L)</li><li>Color: Red， Silver Tone</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41Isjn7xFoL.jpg" noproxy>