Very sturdy and well built product.

Worked great for my router sled.

Great for the router sled project I'm working on.

I needed a rail system that is completely straight, and these fit the bill. The only critique I have is the bearings on the slides could be a little smoother.

This was a reorder of an earlier purchase of linear rails and bearing blocks. The first set of rails/blocks were used for making a router sled. This set of rails/blocks were also well made. The only difference was this set of bearing blocks were threaded for M-5 bolts, about 12 mm deep. The first set of bearing blocks were sized for M-6 bolts (assuming same depth).There is no problem with that, just be aware there may be a difference. All the bearing blocks use an Allen wrench bolt for locking the blocks to the rail.

Tight tolerance, smooth function. Great finish! Impressed by the price for the value-

Works great. Not disappointed in quality. Great deal for the price.

Quick shipping, quality item. Purchased two sets, & will be a return customer. Thanks for the outstanding service!

Product was as billed. Would order again from this vendor.

This is a awesome product! I was able to finish my laser machine . Some people say that the blocks are too loose, some are but they have adjustable screws to make them the right tension.