SRT Multiscender made by Gordon S.
Gordon makes these and other climbing devices. You can contact him directly to make an order: [email protected]
Compact Bulldog Bone: http://www.treebuzz.com/forum/threads/compact-bulldog-bone.28246/page-209#post-533020
Also Find out more by reading the threads on Treebuzz.com:
B.O.L.A.: http://www.treebuzz.com/forum/threads/bola.33956/
Also Gordon's user name is Surveyor on Treebuzz. Found here: http://www.treebuzz.com/forum/members/surveyor.5155/
