After you have created your onshape account, click the link above to enter your own parameters. you can use the variable table to choose the distance between the two arms and the length of each arm.
Personnaly, i have used it as a seringe holder (I'm a bike mechanic)
I hope you like this model. If you do, please don't forget to like it. If not, tell me how I could upgrade it for a future V2.
The author remixed this model.
this is a holder which can be used on the hsw by rostap