DMM Wallnuts fit a variety of cracks well. They, along with Metolius Curve Nuts, perform better than others when cracks are less constricting and more straight-sided. This results from a more aggressive curve than is typical, allowing the Wallnut to cam into the placement. Wallnuts have a distinct notch in the main gripping side of the nut's head. This allows them to be placed more securely in irregular rock types. It also helps set them more effectively and keep them from accidentally popping out. Wallnuts have hot forged heads in their smaller sizes that makes them among the most durable, along with BD Stoppers. Wallnuts are made with a tough cable and will stand up to years of abuse. Wallnuts also feature anodized heads to help with size selection. Wallnuts and the rest of the DMM/Wild Country nut family all have the same color scheme, making them easily interchangeable. Wallnuts have two very different axes for placement. Although we stuck with the classic orientation, they do have excellent taper in the other, front-to-back profile. Wallnuts have a reputation for being heavy but we found that they were lighter than average, debunking that myth.
Wallnuts didn't fit pin scars or flares as well as other models we tested. The notch also can make Wallnuts difficult to clean, giving about the same difficulty as Metolius Curve Nuts and more difficult than Black Diamond Stoppers or Wild Country Rocks on a Wire. Also, one size smaller would be nice. But you can combine them with Peenuts or Superlight Rocks that share the same color scheme.
DMM Wallnuts fit a wide range of rock and crack types well but they excel in irregular or heavily textured stone such as that at Smith Rocks, Maple Canyon and J-Tree. Wallnuts were among the best performing nuts in parallel sided cracks. Wallnuts are expensive but very durable. They place easily and placements are average to assess. They are a more difficult to clean than most of the nuts we tested.
DMM Wallnuts are in the middle with respect to price. People often climbing on textured rock in traditional areas will certainly enjoy the benefit of these nuts. You get a decent size run and good overlap. These nuts will last a long time. Someone willing pay a little extra, hoping to get years out of their investment, will be happy with this Welsh produced passive protection.