Butt diameter

All the installation kit is 1st. directions on how to install the uniloc and
2nd what size drill bits you will need to install and maintenance kit. As i found out that it is much easier to drill a 3/8" first tap the hole 7/16x20 for the insert and then using a boring bar, bore the hole to fit the shoulder of the insert. The pin, drill a 1/4" hole tap it 5/16x14 and then using the boreing bar, bor the hole to fit the shoulder on the joint pin. Now I dont use many of the uniloc's but this works real good for me.
 
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