0.5 Mold 1:3) 20 Teeth 60 Teeth Straight Tapered Umbrella Gear Modified Violent Model Car Differential Assembly Gear

20 teeth inner hole 3: 60 teeth inner hole 5 (1:3) set 20 teeth inner hole 3: 60 teeth inner hole 6 (1:3) set 20 teeth inner hole 4: 60 teeth inner hole 5 (1:3) set 20 teeth inner hole 4: 60 teeth inner hole 6 (1:3) set Single shot of small teeth: 20 teeth inner hole 3 one Single shot of small teeth: 20 teeth inner hole 4 one Single shot with large teeth: 60 teeth inner hole 5, one Single shot with large teeth: 60 teeth inner hole 6 one