ITEM NAME:1 Pc Useful Boat Cover Support Pole, Support System Description: MATERIAL - This boat cover support pole is made of rustproof , durable aluminum material, Cap and Base made of tough ABS PVC. ADJUSTABLE - Height adjustable from 22" to 54",just twist and lock for the height you need. GREAT FEATURE - Props up and supports a boat cover to reduce and prevent debris and water build-up EASY TO USE- this pole can support any area under your boat cover, easy to use, just twist to lock and unlock,telescopes to length needed INCLUDES A BROAD-surface design cap to distribute cover tension evenly and a Base stands to stabilize the boat cover support system in. Specification: Material: aluminum+ABS+PVC Length: Approx.580mm/22.83in Package Includes: 1 Piece Boat Cover Support Pole SKU: DMO0012131367028233.MATERIAL - This boat cover support pole is made of rustproof, durable aluminum material, Cap and Base made of tough ABS PVC. 1 Piece Boat Cover Support Pole. ADJUSTABLE - Height adjustable from 22" to 54",just twist and lock for the height you need.