12" Arm Super Hook, Organize Heavy Step Ladder, Lumber, Sports Equipment, Leaf Blower, Electric Snow Blower, Patio Umbrella & Lawn Spreader, For Use In Garage, Basement, Shed Or Attic, Holds Up To 50 LB, Non Slip, No Mar Foam Arm To Protect Valuable Items, Mounting Surface Should Be Solid Wood At Least 1" Thick & Strong Enough To Hold Intended Weight, Accomodates 12" Shelf, Mounting Screws Included, Dimensions: 0.6" L x 0.55" W x 0.51" H.