Fit for following models. John Deere Excavator: 30, 30 P, 30G, 30P, 35, 35 P, 35G, 35P, 50, 50 P, 50G, 50P. Hitachi Excavator: ZAXIS30U-5N, ZAXIS35U-5N, ZAXIS50U-5N. Of Grooves: 1 groove. We will be happy to resolve any issues you may have in a cordial and friendly manner.