All products are quality tested and fully insulated to 1000V AC. Conforms to VDE 0680/201 ( except extension bars) and EN 60900:2012 standards. All 1/2" square drive. Insulated Reversible Ratchet Handle. 125 & 250mm Insulated Extension Bars. 200mm Insulated T-Handle. Insulated Single Hexagon Sockets.