These are very nice. Stainless steel and just genuinely well made. But, they seem to be just a bit too narrow as in while in the track, they can just be tinted and pop right out of the track. I'm new to kayaking so for all I know that's how it's supposed to be. But once I drilled them into the item I wanted to mount in the track I could tighten it down and it's not gonna go anywhere now.They work great. Seems to be good quality but have not had them in salt water yet. They are long so if you are using it on some other kayak accessories it may need to be cut down. My yak attack tie downs wouldn’t work be use they where too long by my ram ball mount worked because the ball is hollow so it can go through. I cut them down 1/4 in or so to make them fit.Although these fiction as needed (the are the proper size & threads) they were a little pricy, and you get no features. It might have been nice to have included threaded collars to lock them into place. Luckily I had some, but considering each one really needs two, I was short one for my application.These fit well in Scotty’s low profile track mounts. Adapted a SMALLRIG multi-function, double ball head, camera cold shoe mount for use as a mount for an HawkEye Fish Trax portable fish finder. Had to cut the bolt with a hacksaw which was an easy task. Will also use the bolts for a DIY pvc track adapter.One of the bolts I received was not completely straight.Excellent t-bolts. They fit as advertised and do their job.worked great well madeJust what I needed