Penn Elcom - A5251 - 40mm Surfacemount Castor With Skid Penn Elcom Sale! from 2173 /per Qty. Add to Cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. 40mm Fixed Castor fits to edge of case.Sold as individual items. Part No. A5251 Material High Impact Polypropylene Qty available:3 SKU:A5251 Castors - Corner Mount