Shimano derailleur cage lock tool - Keychain

This tool keeps your Shimano 1x12 derailleur cage in place for changing the rear wheel or maintenance. 
Tested with GRX RD-RX822 and Deore M6100, but should also work with SLX M7100, XT M8100 and XTR M9100 derailleurs.

This design allows you to carry this tool on your keychain. 
I made it more compact for this reason, but that means the tool has to be correctly oriented during use.

-Changed outer contour to make design more compact.

-Removed handle and added attachment for keyring