Leidy Tools have been expressly designed as Safety Products to Resist Electric Shock and Protect Workers from injury. Features a 1 1/4″ solid fiberglass shaft for more strength and protection when digging over power and telephone. US Patent No. 4,489,795 Tool No. 795 Features: All handles are 100% Solid, Non-Conductive Fiberglass for Strength, Durability and Safety Prevents Electrical Shock up to 100KV Meets Safety Standards ASTM F-711 and IEE 987