Gear 37 teeth with bushing M4

The M4 bushing fit perfectly into my existing shaft without any extra filing, which saved me a lot of tinkering time. It meshes smoothly with the other gears in the train.

My Eitech model needed this exact gear to get the mechanism working smoothly again. The M4 bushing fits snugly on the axle with no wobble, and the 37 teeth mesh perfectly with the other gears. Really glad to find this exact replacement part.

Fit perfectly onto my existing M4 shaft, and the bushing was already pressed in, saving me a step. Only wish the tooth profile was a tiny bit smoother, but it runs quietly enough for my project.