The case is constructed of 3/8" thick plywood with a thick PVC Black laminate and completely surrounded with thick aluminum extrusion which is permanently machine riveted together. All recessed hardware is used to finish the case and 4" heavy duty casters (2 locking) are also included. A real bargain at this incredibly low price! Due to this product's large size it is subject to a shipping oversized charge. Please see more details under Shipping - Warantee - Returns. Please keep in mind roadcasesusa is still paying the bulk of the shipping charges.