Precisely machined for a perfect fit, the LRT-5 removes and installs the lockrings that retain direct-mount chainrings found on Fazua Ride 60 e-bike drivetrains. Features a 3/8" drive fitting for compatibility with most ratchet handles and torque wrenches, as well as 36 mm wrench flats for use with an adjustable wrench or crow foot. Heat-treated and plated 4140 steel construction ensures durability and long life.Compatible with Shimano Di2 E-tube EW-SD300 wires (nominally 3 mm OD connector)Not compatible with Shimano Di2 E-Tube EW-SD50 wires (nominally 5 mm OD connector) use the Park Tool EWS-1 Park Tool Fazua Ride 60 Lockring Tool eBike Tools UPC: 763477009234