Thin, but solid. the leash is super handy! - Wild Country Climbing Pro-Key Nut Tool w/ Leash

Essentially the same basic shape as most nut tools. Plenty light, but not as jangly sounding. It's great that the tool clips in at the tool itself, and the lanyard has already come in handy. haven't had to pound too hard with my hand on the back end, but even a couple light taps demonstrate that it's far easier on my hand than a standard nut tool. Definitely worth the extra almost nothing in additional cost.