metal gears 0.5 modulus gear brass reduction gears for principal axis gear DIY Micro Motor diy Gear Box Mating Parts

1008A :8 tooth / inner bore:1.9mm /outside diameter:5mm/thickness:5mm 

1010A:10tooth/inner bore:1.9mm/outside diameter:6mm/thickness:5mm

1012A:12tooth/inner bore:1.9mm/outside diameter:7mm/thickness:4mm

1012(2.3):12tooth/inner bore:2.3mm/outside diameter:7mm/thickness:5mm

1014(3.175):14tooth/inner bore:3.175mm/outside diameter:8mm/thickness:5mm

1015(2.9):15tooth/inner bore:2.9mm/outside diameter:8.5mm/thickness:5mm

1016(1.5):15tooth/inner bore:1.5mm/outside diameter:9mm/thickness:6mm

1016(3.175) :16tooth/inner bore:3.175mm/outside diameter:9mm/thickness:6mm

 

2036B:/inner bore 2.0mm 

small circle:10 tooth  outside diameter:6mm

big circle:16 tooth      outside  diameter:19mm