The Tool Tuff Direct rock augers are an industrial line of hex drive augers built for hydraulic power-heads used on skid-steers and front-end tractor loaders. Our rock augers are intended to be used with rock that fractures such as asphalt, concrete, etc. Rock auger specs: 12” diameter, 48” in length, 10mm flighting thickness. The input drive is for a 2” hex hydraulic power unit. The rock tip is entirely replaceable or can replace individual carbide bullet teeth. 1 year warranty against manufacturer defects, otherwise replacement rock teeth are available and affordable. Normal wear and tear not covered.