GoJak 3″ Caster Assembly (GF Nylon). This caster assembly has a violet ringand is a 2nd generation assembly. This new version has a wider swivel radiuswhich improved performance but it means the new caster may not be able to movefreely on GoJak? model G4100, G4107 (made before 2019), G4500, or G4520 (madebefore 2014). ANSI Certified: Casters are ICWM ANSI 2012 Certified Durable Wheels: Unmatched high strength nylon wheels Quality Raceway Bearings: Double ball bearing raceway for easy movement Wheel Bearings: Caster wheel equipped with additional bearing sleeve Replacement and upgrade for part #2006-B4
