JZP-1.5B-SC Bonded Rubber Shock Absorber, 46 mm Body, Wide-Temperature Hybrid Compound JZP-1.5B-SC as shipped: 46 mm bonded element, zinc-nickel plated insert, laser-etched model and batch code. Rated load 1.5 kg Static travel 0.3 mm max. Axial stiffness 50 N/mm Natural frequency 10 Hz ±1 Service temperature -40 to +150 °C Shock capacity 100 g, 12 cycles Insert isolation 5 kV AC Interface M4 on 40 x 22 mm Short answer What it is: a single-stud, bonded rubber-to-metal