CLIMBER-CLIMBRIGHT-ALUMINUM SET-TREE, Notes 3: Replacement parts also available., Includes: Silver J hooks with tree spikes, Upper Straps, Lower Straps, L pads, Sleeves, and Sleeve Screws, Notes 2: These pieces are then tempered to T6 hardness for strength and anodized for added wear resistance., Notes 2: Sleeves adjust from 15-3/4″ to 18-3/4″. They are available as a complete set or without straps and, Notes 2: pads so you can build your perfect climber.