The Abus E20 is a good supplement to the C83
They are both blue belt pin tumbler locks that give a unique and rewarding challenge.
https://share.lpubelts.com/?id=5c0d870b&name=ABUS_E20_E30_E60_E70_NP_6pin
All locks are new half cut euro that are deburred. This means that they are able to be gutted with normal followers. Every purchase