This is a brake for MARKER JESTER ski bindings. It is a set of two, unused items. I purchased these over 10 years ago as spares for powder skis I previously owned, but they were never used and have been stored at home. The included screws will also be provided. They will be shipped in a small bag as shown in the last photo, so please be careful when opening the package. Regarding the width, when measured with a scale, it was: 107mm at the narrowest part, 113mm at the bottom (between the metal and black plastic). *Measured internally. Please note that these have a relatively wide construction, so they may be too wide to be used as brakes for standard narrow skis. I believe the specifications have likely not changed, but I am not familiar with recent ski trends, so please make your own judgment before purchasing.