Pressure Unloader, Max. Flow 5 gpm, Max. Fluid Temp. 120 Degrees F, Max. Pressure 3,000 psi, For Use With 65013, 65016, 65018, 65031, 65032, 65043, Dimensions 6-1/2 in L x 6-1/2 in W x 6 in H, Material Brass