Great design but average to poor execution. The material the pliers are made of (alloy and/or gauge) is not strong enough or "stiff" enough, so there is a lot of flexibility when attempting to remove or install a factory spring clamp (especially larger diameter radiator hose clamps) . . The handles flex and touch before the clip opens wide enough to attach or detach the hose. The material needs to be thicker, more heavily alloyed, heat treated, or forged to get the job done.