Gears kit 75

Nice kit to play with transmission systems, or maybe build something useful with it.
Variety of gears including rack, pinion, reduction, worm and crown ones as wells as u groove wheels for pulley system using rubber bands.
Most of gears are for 2 mm axle, but some will fit 1.5mm, 2.3, 3, and 3.17 mm shafts

Aperture Diameter(mm); Outside Diameter(mm); Pitch Diameter(mm); Thickness(mm)
8Teeth: 1.9; 5; 4; 4.8
10Teeth: 1.9; 6; 5; 6
10Teeth: 1.9; 6; 5; 9.07
10Teeth: 2.4; 6; 5; 5
16Teeth: 1.9; 9; 8; 5
20Teeth: 1.9; 11; 10; 1.5
Double Layer20/10: 1.9; 11/6; 10/5; 1.5/3.5
Double Layer20/10: 2.0; 11/6; 10/5; 1.5/3.5
24Teeth: 1.9; 13; 12; 1.5
30Teeth: 1.9; 16; 15; 1.5
30Teeth: 2.4; 16; 15; 1.5
Double Layer 30/10: 2; 16/6; 15/5; 1.5+3.5
32Teeth: 1.9; 17; 16; 1.5
32Teeth: 2.9; 17; 16; 2.5
Double Layer 32/10: 1.9; 17/6; 16/5; 1.5+3.85
Double Layer 32/10: 2.0; 17/6; 16/5; 1.5+3.85
Double Layer 32/20: 2; 17/11; 16/10; 1.5+3.93
36 Teeth Eccentric Gear: 1.9; 18; 20; 1.5
Double Layer 46/10: 2; 23/6; 23/5; 1.4
Single Layer 80 Teeth: 1.9; 41; 40; 1.8
Single Layer 120 Teeth: 1.9; 61; 60; 1.8
Rack 83 Teeth: Inner diameter 2.05-2.55mm, length 125mm, width 4mm, thickness 7mm
Crown gear outer circle diameter 12.65: 2.9+3.85
Pulley: 1.9; Slot inner diameter 4; Outer diameter 5.4; Slot width 2
Pulley: 1.9; Slot inner diameter 5; Outer diameter 9; Slot width 2
Pulley: 1.9; Inner diameter 13; Outer diameter 16; Slot width 2
Pulley: 1.9; Inner diameter 12.5; Outer diameter 18; Slot width 2
Pulley: 1.9; Inner diameter 21; Outer diameter 24; Slot width 2
T Connector: Through hole inner diameter 2.0mm, blind hole inner diameter 1.9mm