2Pcs SBR16-2000mm Linear Rail Guide + 4Pcs SBR16UU Square Type Slide Bearing Block, 16mm Linear Rail Overall Length 78.7 inch/2000mm for Fully Supported Linear Rail

Product looks good. Was packed well. Have to see how the bearings perform.

High quality, I used to build by saw fence, worked great Wish it came with 2 handles vs 1, but would still recommend!

Totally worth the money .

Smooth rails. They were straight and sturdy, very nice weight. The sliders (or whatever they are called) are ball bearing and smooth. Add a thin film of oil and it’s like ice. Used as a router sled build and it did very well in high dust environment.The only problem encountered. Supplied hex head thumbscrews for the slider blocks. Unnecessarily long. It was an issue that I saw on a video but forgot about when I ordered. Can’t remember the length supplied, but too long and I had to make a store run and scrounge the specialty fastener section for anything to work. Had to mix and match items but found a solution. An annoyance that didn’t need to be present, but the when corrected the rails are great.

The media could not be loaded. Worked extremely well to make a router sled for flattening slabs. One rail was damaged in shipping and the seller made it right immediately. Good customer service

These are nice rails with good support extrusions. Unfortunately the specified mounting hole locations are hacked up and ruined because they are carelessly drilled with inaccurate locations using a drill bit that is far too big, then followed up with an even larger drill bit to remove the burs, which creates a sloppy, inaccurate, and inconsistent countersink. PLEASE STOP DOING THIS! If you cannot drill the supports properly then please offer the supports without mounting holes and let the customer take the proper time and care to drill their own mounting holes. Customers have to abandon the sloppy holes and drill their own anyway if they want accurate locations with proper size holes that screw heads will not fall through.I raised this review from 2 stars to 3 stars due to efforts made by the seller to make things right, including a full refund! I am keeping the product because I do not see any alternative. It looks like these kinds of inexpensive supported rails all to have this same problem - they all appear to be carelessly drilled by hand, and drilled with grossly improper tools. I am able to work around the problem by grinding down two opposite sides of M4 washers that span the length of the sloppy hole. GUWANJI appears to be a conscientious seller and I would recommend buying different products from them.

My seller, GUWANJI, replaced my shipping damage quickly and graciously. Thank you.Their product is fine.

The media could not be loaded. Poor quality control out of the 16 possible threaded holes six of them did not completely chew the threads up on the provided screws and 2 holes were completly off by .05 which might not seem like much until you realize that's how it mounts to whatever so it's going to be pulling to that side so bearing carrier housings are completely useless with the set I got.I'm currently trying to get a hold of the company or seller to see if they will send me new bearing carrier since these are junk but having trouble even getting a hold of them.