[143 mm] Like everything else from WC the build quality is solid and the part works exactly as expected. On par with bright tangerine and ARRI.

[0.04 lb] Item arrived to Canada faster than the expected delivery time, and in great packaging.

[143 mm] Got these to use my 2 BT matte boxes to work with Canon CN-E primes. Worked like a charm. Solid build, as everything is with BT products.

[134 mm] I bought this to fit on my Sachtler Ace Matte Box, which also features a 143mm clamp, to adapt my Cine-Mod Nikkor AIs and Zeiss ZF lenses. It works perfectly and I couldn't be happier, except that I'm miffed with Sachtler / Vintec to fail to provide an essential accessory like this with their products. If I ever get a budget for a better Matte Box, I will definitely consider Wooden Camera's! For now I give their universal cloth donut two big thumbs up.

[Plastic] Although this only arrived about a couple of weeks ago, I don't know how I ever survived without it! The design and manufacturing quality are superb, as is the completeness of the kit. I also bought the Pelican case in which the cut foam packing of the kit fits perfectly, so I am able to transport the kit safely. I could not be happier! I use the product with a Sony FS7, which it fits perfectly. All I needed to do was to ensure I had a good range of 15mm rod lengths so I can use the matte box with ALL my lenses. FYI, the majority of my lenses (Sony 28-135mm, several of my Nikkors and my Xeen lenses) need 8in. rods. I admit that I haven't owned equivalent matte boxes from other manufacturers, but seriously doubt that this kit is rivalled by anything on the market in its price range.

[Plastic] Solid as a rock, lots of mounting points. I mount a zoom to the top nato rail when I need to run audio, works great.

[0.04 lb] I was a little skeptical that this ring would have the holding power to keep the matte box attached but it clamps like a champ.

[Plastic] This matte box is worth every penny. You may be thinking “it’s just a matte box why spend that amount of money on something basic”. The reason id edge you in this direction is the quality of Arri products at a industry cheep price. The stages feel nice when slid into place and also feel secure. The customization is great because you can build as budget comes in. It’s durable and adjustable. Wooden is a great company and their products have always treated me well.

[134 mm] Very easy to add on to the umb-1. You can add it and upgrade your umb-1 within like 1 minute.

[134 mm] I've owned a few matte boxes and rented even more. The Wooden Camera UMB-1 is by far my favorite, the weight is good, it expands to suite your needs and all of the added rails are probably the best added feature. Like all Wooden Camera gear you know it will last and evolve across different platforms. I'd give it 10 stars if I could.