3R Series Caster KitProduct Overview Caster plate and wheel kit for 3R Series cases that do not come equipped with built in pull handle and wheels. Prop65 Information This product can expose you to chemicals including carbon black, which is known to the State of California to cause cancer and birth defects or other reproductive harm. To understand why we must make this statement please click on the Prop 65 tab above. For more information on Prop 65, go to www.