Sets using Technic Gear 21 Large Tooth

×4

103-2

System → Samsonite

×8

105-3

System → Samsonite

×2

800-1

Universal Building Set → Gears

×4

801-1

Universal Building Set → Gears

×4

802-1

Universal Building Set → Gears

×3

803-2

Universal Building Set → Gears

×1

810-3

Universal Building Set → Gears

×1

811-2

Universal Building Set → Gears

×1

812-1

Universal Building Set → Gears