1.GREAT FEATURE - Props up and supports a boat cover to reduce and prevent debris and water build-up. 2. APPLICATION - this pole can support any area under your boat cover. 3.MATERIAL - This boat cover support pole is made of ABS Plastic material. If there is always strong wind or heavy rain in your area, we highly suggest you to choose our aluminum pole for stronger pretection 4. ADJUSTABLE - seperate poles for extension, About Height adjustable from 57cm to 137cm Product name: ship cover telescopic support frame Applicable ship type: most boats, such as kayaks, yachts, lures Colour:Silver+black Material:Aluminum+ABS Size:Shrinked size: about 57cm expanded size: about 137cm Package Contents: 1x Ship cover support frame Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.