The DirectPlug Shimano XTR can be used to take your Shimano XTR direct mount chainring off your bike and put it back on. This chainring tool can be used in combination with a 36mm spanner or 44mm BB tool. With the DirectPlug you won't damage your chainring, frame or other parts of your bike.
Directmount Chainring tool for Shimano XTR with 41mm / 16 notch lockring
Operate with 44mm BB tool (BTL-27L) or 36mm spanner (BTL-56)