The cir clip tool I have is not Stihl made its made by bux tool company in my opinion it’s a better make then stihls . The bux tool c-clipper as they call it more or less is conical it walks one end of the clip in the grove not over stressing the clip what so ever as I’m always scared the Stihl c clip installer does if you would like pics please let me know this tool is brand new it was accutally purchased to reassemble a 1987 rm80h somehow I ended up helping a buddy with a yamaha rt100 a few years later and ended up purchasing a second beings I misplaced my first one used on the Suzuki so I would be willing to sell one