Qualtool Qryptonite K84-3R Number 3 Square Power Drill Bit has a point size of 3, has an overall length of 3 inches, and a 1/4-inch hex shank. This bit is designed for industrial and construction use. It is designed with an optimal balance of shock resistant steel, hardness and plating to minimize breakage and extend tool life. Coating helps minimize metal chips. Made in the USA