816304 321K Impeller Kit 4.75" Armstrong Fluid Technology Product Type_Hydronic Unit Heater HSB33 The Jergens STRAP CLAMP is 3750 Plain Jergens tooling The Jergens STRAP CLAMP is designed to withstand demanding conditions and is ideal for applications such as welding preventing slippage or damage * Enables precise adjustments and accurate alignment in critical applications * Improves safety and efficiency by eliminating the need for makeshift solutions **Applications:** The Jergens 19704 Fixture Key is essential for: * Tightening and loosening hex bolts and screws * Assembling and disassembling fixtures * Performing precision work in machine shops By replacing worn or damaged impellers with this high quality kit you can restore optimal pump performance