Pair of additional top sections for Ecotone aluminium poles to increase height of Ecotone pole set.
The pole set is available here: https://british-trust-for-ornithology.myshopify.com/products/ecotone-set-of-two-aluminium-poles
Additional pole joint bolts are also available: https://british-trust-for-ornithology.myshopify.com/products/ecotone-set-of-4-joint-bolts