Insulated Variable Joint Pliers for Working at Height Our insulated variable joint pliers have been specifically developed for working at height safely. We stock 10-inch and 11-inch pliers and each one comes equipped with a handy attachment point to tether the item to a harness or belt. This helpful feature prevents tool droppages and serious accidents from occurring while at work. Furthermore, their robust design is guaranteed to stand up to extreme impact and abrasion, even in the toughest of work environments. Comprised of solid metal and a high-quality flame-retardant insulated moulding, our insulated variable joint pliers deliver effective protection against electric shock and arcing up to 10,000 volts.