Undermount Sink Clips Supporting Brackets - Universal Epoxy Sink Clip Kits, 10 Pack, for Kitchen Marble Granite Countertop Bathroom Vanity Sinks

At first I am also concerned about whether it will hold. 24 hours after applying JB weld epoxy on the anchors, they bond well with the quartz surface. To avoid the clip breaking the studs away from the surface due to too much leverage, I placed the clip on the bonding foot of the anchors, so even if the wing nut screws in, the force to pull away from the surface balances itself with the pressing force towards the surface. One thing to watch is to avoid getting the epoxy on the anchors threads, it is hard to screw in once the epoxy cures. I have to scape the epoxy off the threads to screw in.Great solution for under mount sink installation. The users failed with the product probably didn’t use the right adhesive or installed improperly.

Very good product.I used cold weld to attach the clips to the underside of a quartz counter, the clips are great and it's a pleasure to work with.Shipping was a bit long, but did the job.Satisfied and I think this product is recommended to anyone!

They worked great, combined with epoxy glue it solved my stone benchtop dropping kitchen sink issue

We updated our master vanity and installed under mount sinks. This product made it easy to attach. But our sinks felt too heavy so we also installed extra support incase someone were to stand on the vanity around the sink (to switch out the light fixture above it)

Was easy as pie to install