Shopsmith Premium Retractable Casters Make Moving Your MARK Around the Shop Effortless! \n \nThese premium, rugged retractable casters have been made especially for the Shopsmith MARKs. Prepare to be amazed as You roll Your MARK effortlessly from location to location. You'll glide over basement and garage floor concrete expansion joints with ease. \n \nMade of a rugged die-cast aluminum with solid steel rods, they feature a spring-loaded mechanism that offers three settings: \n� Step once on the actuator and Your MARK raises 1/4" off the ground for rolling over smooth surfaces \n� Step twice on the actuator and the ground clearance increases to 1/2" \n� A third step allows Your MARK to settle gently back onto the ground when You're ready to go to work. \n \nEach set features big 3" diameter by 1-1/4" wide casters with polyolefin wheels that and rugged 3/8" steel axels that roll super-smoothly on sealed ball bearings. They swivel a full 360� for effortless directional changes. \n \nPremium Retractable Caster Assembly (556247) \nShopsmith Premium Retractable Caster Assembly includes a heavy duty, die-cast aluminum and steel components, a steel drill guide and drill bit for drilling. Your bracket mounting holes and all the nuts and bolts You need to attach them to Your MARK legs. \nIncludes: \n� (4) 3 Inch Dia. Red Wheels \n� (2) Caster Brackets \n� Installation Steel Drill Guide with Drill Bit \n� Mounting Hardware \n� Instructions \n \nPremium Retractable Caster Upgrade (556224) \nNo need to pay for a duplicate Caster Bracket if you already bought the Standard Caster Assembly previously. With the Shopsmith Premium Caster Upgrade, You can replace the 2" rubber casters in Your standard retractable casters set with new (4) 3" easy-rolling polyolefin ball bearing (Red) premium casters and get all the benefits described above. \nIncludes: \n� (4) 3 Inch Dia. Red Wheels \n� Quick Installation Kit \n \nWe tested the Premium Retractable Casters against our original Standard Casters and discovered some remarkable results. The Premium Retractable Casters required 50% less force to move a MARK than the Standard Casters. Both Casters improved the ability to easily glide a MARK over the floor. The Premium Retractable Casters created significantly more ease and required less effort. \n \nNeed to Replace (1) Premium Caster Wheel? We have that! \n� 3 Inch Diameter Premium Caster Wheel (1 Red Wheel) (522877) \n \nStandard Retractable Caster Assembly (555354) \nOur rugged Standard Retractable Casters are made especially for the Shopsmith MARKs almost since day one. Hundreds of thousands of sets have been in use for nearly 50 years and failures of any kind are practically unheard-of. \nIncludes: \n� (4) 2 Inch Dia. Black Wheels and Caster Bracket Assembly \nMade of a rugged die-cast aluminum with solid steel rods, they feature a spring-loaded mechanism that offers three settings: \n� Step once on the actuator and your Mark 7/Mark V raises 1/4" off the ground for rolling over smooth surfaces \n� Step twice on the actuator and the ground clearance increases to 1/2" \n� A third step allows your MARK to settle gently back onto the ground when you're ready to go to work. \n \nEach set features 2" diameter rubber wheels that swivel a full 360� for effortless directional changes and all the nuts and bolts you need for fast, simple attachment to the pre-drilled holes in Your MARK�s legs - in about a half an hour! \n \nOnce you've had a set of these you'll wonder how you've done without them! Additionally, many customers have told us that they have even adapted these casters to workbenches, shop cabinets, stationary tools, and other uses around the shop. \n \nNeed Some Extra Standard Caster Wheels? We Have That! \n� 2 Inch Diameter Standard Caster Wheel (1 Black Wheel) (522215) \n� 2 Inch Diameter Standard Caster Wheel (Set of 4 Black Wheels) (522225) \n \nBring Extra Convenience and Mobility To Your Shopsmith Tools \nRetractable Casters for Your Standard Height SPT Stand (Includes 4 Black Wheels) (555353) \nRetractable Casters allow you to move your SPT Stand and Major Accessory around your workshop with ease. Retractable Casters mount to the legs of the SPT Stand your major accessory sits on. \n� Step once on the actuator and Your MARK raises 1/4" off the ground for rolling over smooth surfaces \n� Step twice on the actuator and the ground clearance increases to 1/2" \n� A third step allows Your MARK to settle gently back onto the ground when You're ready to go to work. \n \nPlaner/Power Stand Retractable Casters (For all Shopsmith special purpose tool stands, except Scroll Saw) \n \nRetractable Casters for Extended Height SPT Stand (Includes 4 Black Wheels) (557122) \nExtended SPT Stand Legs require their own set of Retractable Casters because the Leg Extensions make the Extended Height SPT Stand 6� taller than Standard Height SPT Stands. These Retractable Casters allow you to move your Extended SPT Stand and Major Accessory around your workshop with ease. Retractable Casters mount to the legs of the Extended SPT Stand your major accessory sits on. \n� Step once on the actuator and Your MARK raises 1/4" off the ground for rolling over smooth surfaces \n� Step twice on the actuator and the ground clearance increases to 1/2" \n� A third step allows Your MARK to settle gently back onto the ground when You're ready to go to work.