THE KENDALL HOWARD PERFORMANCE CASTER KIT IS A GREAT ADD ON TO OUR PERFORMANCE SERIES® LAN STATIONS/WORKBENCHES. NO HARDWARE OR TOOLS ARE REQUIRED TO INSTALL THESE LOCKABLE SWIVEL CASTERS. THEY SIMPLY TWIST INTO THE BASE OF THE TABLE LEG FOR A SECURE HOLD. THESE HEAVY DUTY BEARING-DRIVEN CASTERS HAVE THREADED SHAFTS THAT REPLACE THE LEVELERS AND MAKE INSTALLATION EASY. WITH A MAXIMUM LOAD CAPACITY OF 1000 LBS. YOU CAN ADD THE LAN STATION CASTER KIT TO ANY PERFORMANCE SERIES® LAN STATION/WORKBENCH OR 4-POST OPEN FRAME RACK TO MAKE IT MOBILE. WHEN INSTALLED THE CASTERS WILL ADD 4"" IN HEIGHT. FEATURES UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" FOUR HEAVY DUTY BEARING-DRIVEN CASTERS ALL CASTERS ARE LOCKING NON-MARKING WHEELS TOOL-LESS INSTALLATION LIMITED LIFETIME WARRANTY