This is a genuine Bosch lock-ring tool to remove the castellated nut or threaded chain guard from the front sprocket of a Bosch Gen 4 motor. Generation 4 (Gen 4) covers the Performance Line CX and cargo line from 2020. Use with 1/2" Two-way Ratchet Wrench (#53R4).
Product Dimensions: 4.3x 4.3 x 4.5cm.
Weight: 0.170kg.
Colour: Black.
Material: Cr-Mo Steel.