The spring bar tool is certainly not a professional tool, but the material is sufficiently stable and who has only now and quickly switch to even a watch strap, makes nothing wrong here. On the stability of Stifteausrückers I can not say anything because I use this separate tool.
However, the spring bar claw served its purpose perfectly, even if for professional, work independently ensure higher quality should be chosen.
At the price for the belt change at home but strong buy recommendation.