Sealey BC1630 220A 16mm x 3m Booster Cables are made from PVC sheathed copper coated aluminium cable that gives maximum power transfer yet remains flexible. They are resistant to oil, grease and most acids and have insulated and oversized clamps with strong return springs that help reduce the heating effect of power transfer. Sealey BC1630 220A 16mm x 3m Booster Cables Supplied in reusable nylon bag with operating guidelines