I love the claw mod from Professor Boots but wanted a way to quickly change attachments. This is a two piece print. You need to re-print and install the modified quick change adapter on the tractor (it now has a slot for the wires), as well as install the new motor mount piece of the claw which now has a slot for the quick change adapter. The other issue of-course is the wires. I used servo connectors as quick change disconnects. (see photos). With this mod I can attach at de-attach the claw in under a minute. Enjoy!