Clay Grafter Insulated This SHOCKSAFE range of PolyFibre Insulated Tools fully conforms to BS8020. The handles are doubly protected by twin layers of polymer sheathing moulded over the rigid fibreglass core. The orange outer sheathing is high voltage and abrasion resistant. When the white inner sleeve becomes visible, the tools should be removed from use around live working conditions. Each tool is flash tested to 10,000 Volts, uniquely numbered and certified.