0.5Modulus Bevel Gear. 40T Hole Dia 6mm Bevel Gear + 20T Hole Dia 3mm Bevel Gear. 1 Piece Hole Dia 6mm Bevel Gear. 1 Piece Hole Dia 3mm Bevel Gear. Number of teeth: 40T. Number of teeth: 20T. We'd like to settle any problem in a friendly manner.
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