Precision ground for heavy use and easily sharpened, it can enlarge existing holes with ease and bore any arc of a circle. Carbide tip is specially designed to pass through hole cleanly in end grain and thin stock, great for boring concealed hinges and door clocks. Work with an electric drilling tool (not included). We use the finest industrial quality micro grain carbide to produce very sharp cutting edges and improve cutting resistance.
Product Name: Hinge Boring Bit; Material: Tungsten Carbide
Weight: 67g; Package Content: 1 x Hinge Boring Bit
Boring Diameter: 21mm / 0.83"; Overall Length: 85mm / 3.3"
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)
Color: Red, Silver Tone