Expert Quality, drop forged from chrome vanadium steel correctly hardened and tempered. Each plier has been tested to 10,000V for safe 1000V AC or 1500V DC live line working. Lacquered finish for corrosion protection with heavy duty, fully insulated, soft grip handle. Has 'no - nip' feature which prevents handles locking together when at largest capacity and damaging users' hands. Display packed. Manufactured to DIN Standard and individually certified to EN 60900