Sink Clips, Undermount Sink Brackets, Bathroom Kitchen Ceramic Stainless Steel Sink Basin Support Clamps for Marble Granite Vanity Countertop Installation Repair Kit (10)

Screwed these into the underside of a butcher block counter top for an under mount style sink. They seem very durable, easy to install and work great!

Brackets worked fine and I would make several suggestions in the process if you're mounting a sink from below the counter. First position sink without any adhesive/sealant and pencil mark outer rim edge; position desired bracket placement positions with pencil also during this time; use J-B weld either 1 minute or 5 minute silicone two-part epoxy (.85oz). I found that one epoxy pack provides enough for two brackets, but don't mix full contents at once: mix only for one bracket at a time - especially if using the 1 minute quick-set type. For the 5 minute set, take your time in mixing and regardless of which is used, don't apply paste if it will "run' off the applicator (use thin plastic 1"strips). And don't apply too much because when you press the circular piece in position, since you're working from below the counter, excess epoxy may run down the threads - on you, also - and harden. If that occurs, the paste will harden and will restrict proper, full tightening of the wing-nut to the metal bracket support against the rim. Do not attempt to tighten wing-nut until the circular piece has set for the duration - if you do, it is likely the wing-nut will encounter the wet epoxy and weld itself to the bracket --- not good for any future removal

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.

I guess working upside down is always going to get messy, but this product could’ve done a better job helping with the install. Ultimately, once installed, it seems to be supporting the weight of my sink (of course there’s already epoxy between the sink and the countertop). But these give a sense of extra secure. But what a mess! The open slots allowed epoxy to drip everywhere and the product doesn’t provide any way to hold the clips in place while being installed.

I used epoxy to glue to bottom of counter top and provided pressure with clamps until glue hardened. I highly recommend when you are gluing the base, make sure to wrap tape around the threads of the bolt so glue does not get on them. I accidently got glue on the threads of one and could not get the bolt to thread on it.

These worked great for securing an undermount sink to our granite countertops. The key is to purchase a quality 2 part epoxy for gluing them in place (we used JB Weld 50112). Also, make sure that the granite that you are attaching them to is clean and dust free by scrubbing well with denatured alcohol. Do yourself a favor and do an internet search for videos on installing these undermount sink brackets.

They seem to do what they were supposed to do

We needed to replace a kitchen sink and found that there were only four brackets on the old sink. We ordered these and they were a perfect solution. The new sink went in without a hitch and we still have a few brackets left over.