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  • Direct Axle Technology allows greater placement options in shallow, narrow or bottoming rock features
  • Also makes tricky placements easier due to better cam lobe visibility, especially in the smaller sizes
  • New Range Finder markings eliminate guess work: Green Zone for go, Yellow Zone for caution or trade up sizes and Red Zone for stop!
  • U-shaped body provides greater durability and better control during placement and retraction
  • Durable, flexible, stainless-steel cable body with long-wearing trigger slides are lightweight, strong and allow easy placement
  • Split-wire triggers with knurled trigger bars allow you to use one, two or three fingers--or even gloved hands
  • Features three, wide CNC machined 0.25 in. cams of super-durable 7075-T6 aluminum
  • Machined cam stops and radiused teeth increase cam durability and holding power; optimized cam angle applies more outward force
  • Lightweight Dyneema nylon slings are color-coded for quick, easy identification and less bulky than standard nylon slings

Made in USA.

Individual specifications listed below for size / range / strength / weight / color:

  • Size 00 / 8.5 - 12mm / 5kN / 41g / gray
  • Size 0 / 10 - / 5kN / 43g / purple
  • Size 1 / 12.5 - 18mm / 8kN / 50g / blue
  • Size 2 / 15.5 - 22.5mm / 10kN / 57g / yellow
  • Size 3 / 18.5 - 26.5mm / 10kN / 59g / orange
  • Size 4 / 23.5 - 33.5mm / 10kN / 68g / red

View all Metolius Cams

REI membership


Best Use Rock Climbing
Expansion Range 8.5 - 33.5 millimeters
Strength 5 - 10 kilonewtons
Weight 41 - 68 grams
Rated 3 out of 5 by from Okay This is my least favorite of the metolius cams I have tried (TCU, Powercam, Mastercam). They do have a nack for fitting into certain placements but the weight savings aren't worth the little bit of instability gained as a three cam unit instead of the powercams 4. I love the blue, but other than that I'm not a fan. The smaller ones (00 grey and 0 purple) are best replaced with the Black Diamond C3's which are expensive for sure, but stronger and can fit into smaller, tighter placements.
Date published: 2009-09-11
Rated 4 out of 5 by from A standard If you have only placed single stem cams the U stems will take a while to get use to but once you do no other TCU will place as quickly or as securely. I feel much more confident above one of these than the BD C3's, that's simply an opinion. They just feel more rugged, secure and the trigger feels like it hold the piece in place better than the C3's. These are classic and there is a reason that they have not needed to change the design significantly over the years.
Date published: 2008-12-17
Rated 5 out of 5 by from Incredible cam and light weight,buy em I bought some of these recently and I love to climb with them.I also bought a few of the new master cams as well,and I like these much better. Probobly because the sling broke on my #5 master cam while cleaning the route.The TCU's are an awsome part of my rack and I feel very confident having them under me on the route.They are solid and I recomend buying at least one set for medium placements.Yet another great cam from Metolius.
Date published: 2009-08-29
Rated 5 out of 5 by from Solid workhorse The most solid cam I've used in this size range. I feel good hanging off even a well placed 00. I've got a mix of the original and ultralight, doubles on most. They've done a great job of shedding weight on the ultralight while keeping the solid feel. The dual stem design is a confidence booster in horizontal placements. The 1-3 are always a part of my rack.
Date published: 2007-11-14
Rated 5 out of 5 by from Best Small Cam This is by far the best small cam on the market. They're super strong and durable, easy to place, easy to clean, just a great cam. I've used C3s and aliens as well, and TCUs are my favorite. I don't really like C3s at all, and aliens are great in some placements, but I have trouble really trusting them. TCU's are solid and reliable.
Date published: 2011-03-24
Rated 5 out of 5 by from Great Cams I wasn't sure the u-stem was for me since my first set was BD c4. I bought these as a second set for the weight savings. After using them a few times I am sold. Great quality, light, reliable and hold fast. I can hold sizes 00-6 (8 cams)in one hand. Small light and reliable.
Date published: 2009-11-21
Rated 5 out of 5 by from very good Some of the best out there. Good, less expensive alternative to C4's when it comes to the small sizes (.75 and down). If you can, wait for Metolius' single stem design due out in early '08 - they may be the new gold standard in small size cams.
Date published: 2007-09-07
Rated 5 out of 5 by from Solid medium cam This is my favorite line of medium sized cams. Placement is super easy and I haven't had any stick yet while I've had to leave some cheaper cams on the mountian that wouldn't clean well.
Date published: 2007-09-07
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