4" Rigid Caster - Gray Iron Wheel - Model G15 G15CL4x2-R Price:$13.45    Each 500 Lb. Maximum Capacity Each 4" Gray Iron Wheel. Photo shown with 6" wheel. Home | Application Tips | Standard Products - Casters and Caster Wheels | Warranty | Summary | Contact Us Casters - Helpful Tips | Special Products - Casters and Caster Wheels | Web Resources | Site Map Photos & graphics are for informational purposes only. Actual product may vary slightly from those shown. Wheel colors may vary unless specified. If wheel color is important, please contact us for current inventory.