Hawaiian Ice, it is a well designed home-made piece that a good friend made for me from parts found for the most part at the hardware.
Parts List
1 - coupling nut: 1/2" x1/2" (2 drilled holes 3/32" for two spring pins)
1 - hex nut: 1/2"
1 - hex bolt: 1/2" x 8" with 1 5/8" of threading (cut hex head and excess length off)
1 - 11/16" x 6 3/4" threaded steel rod on one end to 1/2" threads 5/8" in length
(drilled hole 1/4" through rod for Lazer T-bolt to fit through, allowing as much length
as will fit into the Lazer)
2 - fender washers: 1/2"
2 - spring pins: 3/32" x 11/16"
1 - "safety disc" of needed diameter
(notice the drilled holes in the hex bolt and coupling nut to place the spring pins in to lock pieces together; Loctite might also work well in place of pinning- all rotations tighten up when drilling ice)
Pan left & right to view expanded views of photos. (bolt and rod are not bent like they look in 1st photo)