Irega 10" 1,000V Insulated Adjustable Wrench, IR92SI10 1-1/8" Capacity For work on voltage or in the proximity of voltage installations with nominal tensions up to 1,000 V for alternating current and 1,500 V for direct current The handle insulation material fulfils the requirements of IEC 900 and EN-60900 as far as it concerns the electric strength and the mechanical properties. Flame retardant material, the differently-colored insulation layers provide easy identification if insulation is damaged Can be used within the temperature range -20C and 70C The design and insulation of the handle allows a secure grip and prevents slippage