Shop Fox 3in Non-Marring Swivel Caster Plate Mount with Lock. Shop Fox built these with high density clear plastic wheels and non-marking rubber/plastic feet or a combination of both. The Shop Fox Non-Marring Swivel Caster Plate Mount with Lock stands at 77 lbs capacity and has a 21/2" height to mounting plate. These casters can be mounted in seconds and are incredibly easy to install. Grab a Shop Fox Non-Marring Swivel Caster Plate Mount with Lock to help your device move around with little to no resistance. Specifications for Shop Fox Non-Marring Swivel Caster Plate Mount with Lock: Manufacturer: Shop Fox Size: 3 in Package Contents: Shop Fox Non-Marring Swivel Caster Plate Mount with Lock Shop Fox D4543 3in Non-Marring Swivel Caster Plate Mount with Lock