Gear Wheel Assortment / Gear Racks, Gear Wheels and Pulley Wheels

Technic Gear 16 Tooth with Round Holes [Old Style]

Light Gray· 4019

Technic Gear 24 Tooth [Old Style - Three axle holes]

Light Gray· 3648a

Technic Gear 24 Tooth Crown with Flat Teeth

Light Gray· 3650a

Technic Gear 40 Tooth

Light Gray· 3649

Technic Gear 8 Tooth

Light Gray· 3647

Technic Gear Rack 1 x 4

Light Gray· 3743

Technic Worm Gear

Light Gray· 4716

Technic Steering Pulley Large

Light Gray· 3736

Technic Wedge Belt Wheel [aka Pulley]

Light Gray· 4185