Listing is for four (4) quick release caster pad for Service Caster Series 60 casters or for most casters that feature a 4-1/2″ x 6 -1/4″ top plate. When searching for a reliable and durable solution for medium and heavy duty projects, consider Service Caster’s Series 60 quick release caster pad. The Service Caster Series 60 quick release caster pads are attached to containers, carts, and a number of other applications by welding the pad to the bottom of the application. The quick release, quick change, quick mount caster pads allow one to easily remove and attach casters when needed. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward.