Buckingham Replaceable Tree Gaffs with PIN FASTENERS. If your Buckingham climbers were purchased before June 2007, then you will need these pin style replacement gaffs.
Buckingham climbers purchased between 2007 and January 2011, use the screw style gaffs, item CL-9306T.
If your Buckingham climbing spikes were purchased after January of 2011, use the dowel and screw style gaffs, item CL-9306NB.