0.5 Kg lace through Black Lead Block perfectly designed for ease of use and extreme durability. Quickly attached to all standard Divers 2 Inch/50mm webbing weight belts, simply maintained in position using 3 Bar Buckle type Weight Retainers. Shaped to suit your body curvature and add increased levels of comfort when worn. All Corners and Edges are rounded off to reduce drag and minimise interference with other equipment.