This product is a replacement coring bit for HSC-860QR. This coring bit features the following: Made of heat-treated high carbon steel for long life and durability Can be replaced using a standard hex key (included in HSC-860QR) Cable Type 860QR Bit Size 0.860- (2.18 cm) Dimensions 2.72- (6.91 cm) x 1.19- (3.02 cm) x 1.19- (3.02 cm) Weight 0.39 lb (177.06 g)