Side Lock Brake. Available for both swivel and rigid caster. The brake places a positive locking force against the wheel hub to hold loads securely. Larger foot pedal makes brake easier to operate and provides better foot placement. To order with caster specify "BRK3". To field install, order part number 05128.28PN for 8", 05128.30PN for 10" models, . U.S. Patent 5,402,864.