Enclosed head is sealed to prevent dust, dirt, and liquids from entering head, preserving internal lubrication. Forged one-piece ratchet provide strength and safety for industrial applications. Smooth comfort-grip handle permits all-day use without gloves. 36 tooth gear with 10 degree of engagement allows engagement in tight working areas Nickel/Chrome plating provides increase protection from rust and corrosion. Square drive tools and accessories – Square drive tools are designed and manufactured with spring loaded lock buttons. The lock button engages with side lock holes drilled in sockets, extensions, and adaptor sensuring positive retention.