I have not used these yet as I am a few months away from needing them but wanted to make sure they were useable for my project. Decent quality aluminum jig so I am sure they will work fine. No directions so you'll need to review online for how they work. Not exactly a common item to setup so it should have included some kind of instructions. The pair are one piece so no setup needed but how to use them would have been nice to include.
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