The Chinook Standard Aluminium mast extension is  probably the most highly regarded aluminium extensions on the market.

• Large brass rollers significantly reduce friction and give easy down hauling.
• Fully adjustable, easy to use slim line snap-on collar.
• Large finger friendly metal release button - with a good positive action.
• Finished in a stunning blue anodized outer coating.
• Highly visible and durable height adjustment markings.
• High grip clam cleat and quality downhaul rope.