The IIX Equipment GP-81 gin pole kit consists of a single heavy-duty tower clamp and pulley assembly. Requires a 2" O.D. 10-12 foot long pole to be supplied by customer or order the GP-UPS two-piece UPS shippable aluminum gin pole below. Works with Rohn 20G/25G/45G/55G and similar towers, with leg diameter from 1-1.5" outside diameter.