Aluminium bronze.. Handle 10 times stronger than a wooden handle and 3 times stronger than a steel handle.. The ROEBUCK fiberglass handle is manufactured using a continuous extrusion process known as 'TCP'. It passes through a microwave oven at high frequency for its hardening.. Anti-Static. Self-extinguishing and high heat resistant material (140°). Head sealed at the handle with a 2-component resin.. Withstands a traction pull of more than 1800 kg. Non-Conductive, minimum up to 36000V. Insensitive to temperature variations - not conducting cold.. Insensitive to moisture.. Without vibration transmission to the user's arm.. Ergonomic handle.. German made.