Yaheetech Tool Set Case Mechanics Kit Box Organize Castors Toolbox Trolley (399PCS) Great tool set and to be the most useful & helpful Comes in aluminum trolley with 2pcs castors& 2 keys to strengthen the outside lock Tools are made of premium carbon steel Approx. Size: 17.7 x 14.2 x 6.7" Net Weight: 27.5lbs