The Revvo Caster Company has introduced of SJE series swivel casters. Units feature zero offset for added stability and safety, and are designed for building and refitting scaffolds. The casters conform to DIN 4422: HD 1004: 1992 and BS 1139: part 3: 1994. Three models include 5 in. (125 mm) and 6 in. (150 mm) wheel diameters with load capacities of 1320 lb and an 8 in. (200 mm) diameter model with a load capacity of 1800 lb.