Hardware Resources Knife-Block Combo Hanging Shelf for SMART RAIL® Storage SolutionKnife Block Hanging Shelf is an accessory for SMART RAIL. Smart Rail Storage System is an alternative way to organize and have your essential items on hand by having them easily accessible and free up counter space by hanging accessories on a wall mounted rail. This shelf is made from aluminum with bamboo accents with five slots for knives, stainless steel canister to hold other accessories, and front has four hooks for additional storage. Locks into