12-piece kit includes: (3) 32" aluminum rails, 2 large J hooks, 4 multipurpose hooks, 1 basket hook, 1 loop tool hook, and 1 bike hook. Accommodates 16" or 24" stud spacing. Supports up to 300 lb. Hardware included: (18) No. 8 x 1-1/2" Phillips flathead screws and 18 plastic anchors.