buys and sells used K'nex. We have a large selection of pieces for all your building needs.
We now ship globally. More building fun for everyone!



Popular Now

Black Socket Connector

Standard Black Socket Connector

Orange Connector

Standard Orange Connector

Purple Connector

Standard Purple Connector

Black Chain Link

Standard Black Chain Link

Light Green Transition Rod

Micro/Standard Light Green Transition Rod - 1.45 in.

Red Transition Rod

Micro/Standard Red Transition Rod - 0.84 in.

White Connector

Standard White Connector

K'NEX Brick - 2x4 Blue

K'NEX Brick - 2x4 Blue


New Items

Off-White and Beige Connector

Off-White and Beige Connector

150 Random Standard Size Rods & Connectors

150 Random Standard Size Rods & Connectors

Green Flexi Rod

Standard Green Flexi Rod - 7.5 in.

Neon Yellow Flexi Rod

Standard Neon Yellow Flexi Rod - 7.5 in.






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