Brand: Lugall Meets ANSI B30.21. Tested to 125% of rated load. Forged hooks with latches. Double flanged drum keeps the strap from contact with the ratchet teeth. Breakable stress link that signals an overload condition. Double interlocking pawl mechanism. No load brakes to slip or foul. Self lubricating bearings. Aluminum alloy frame. Reversible fiberglass handle. Standard quick release pulley block double reeved for full capacity. 2 Series has small frame. 3 and 4 Series have medium frame.