Safety carrier with 2 suspension hooks and safety catch. Can be used with all wall rails Classic 50, steel shelves art. no. 10700, wire mesh shelves art. no. 10707 as well as with wooden and glass shelves in conjunction with push-on holder on one side art. no. 11604, push-on holder on two sides art. no. 11612 as well as, additionally for glass shelves, plastic suction cup art. no. 11605.