Technic Driving Clutch Shift Gear 6542 1894 for Lego Kit Building Blocks Set DIY | eBay
Amazon.com: SEEMEY 184PCS Gear and Axle Set for Technic Parts Compatible with Lego Technic Parts, DIY Gears Assortment Pack((Liftarm, Pins, Axles, Connectors)) for Technic Building Blocks Set(Random Color) : Toys & Games
LEGO 6276052 GEAR SHIFTER CONNECTOR 3M - BLANC
Building Block 10PCS High-tech Shift Gear Shifter Lever Educational MOC Parts 6641 Compatible with Lego Accessories Toys