BTS 4Kg P-Weight A21299905 ?4Kg Black Powder Coated P-Weight , perfect for adding additional weight to a Diving System if required. Fits inside the ?V? on the Backplate of most types of Technical Harness or B.C.D. with either Twin or Single Cylinders. Neatly attached using Backplate Cylinder Mounting Bolts. P-Weights are an excellent way of placing weight onto a Diving System allowing a reduction in what?s carried on a Weight Belt, in an emergency less Weight is ditched, allowing for a safer ascent rate whilst still being more buoyant at the surface. P-Weights are also neatly concealed right above a Divers centre of gravity adding stability. Black Powder Coated.