Step-on lock secures caster wheel and locks swivel in position for optimum scaffold safety. Hard rubber tire is bonded to cast steel wheel. Zinc-plated, 600-Lb. capacity caster has Zerk fittings for easy greasing. Lock adjusts for wear. 1-1/4in. 1-3/8in. 1-7/16in. diameter available. stem is 4in. long. *Wheel Size: 6in. x 2in. 8in. x 2in. 10in. x 2in. *Stem: 1-1/4in. 1-3/8in. 1-7/16in. diameter x 4in. length *Capacity: 500 Lbs. - 800 Lbs. *Wheel Type: Swivel *Brake Type: With double brake. *Other Name: Scaffold rubber caster, scaffolding castors, scaffold brake casters, scaffold casters, scaffold caster with locking, scaffold locking castors, scaffold bracket casters *Place of Origin: China