SPEEDJAW 3 in Ductile Iron Bench Vise Outdoor Privacy Fence Rheem Commercial Universal Ultra Low NOx Rheem Commercial Universal Ultra Low NOx (ULN) Natural Gas Water Heaters are designed to fit into tight retrofit applications and have the features and capacity to meet heavy duty demands High Hardness Rating: Boasts a Janka Rating of 3000 non slip grip 3 INCH JAWS 3 inch wide jaws open to a maximum of 3 1 4 inches with a 1 3 8 inch throat depth RATCHETING HANDLE ratcheting handle allows fine adjustment and increased mounting options beyond the edge of a work bench DETACHABLE BASE MOUNT unit clamps onto a 360 degree inscribed posi clock disc that allows for precise rotation and lets the vise be stored out of the way when not in use CAST DUCTILE IRON vise is made from high strength RAPID OPENING rapid open and close feature saves time with fast adjustments DURABLE STEEL JAWS durable tool steel serrated vise jaws are replaceable and provide a secure