These replacement tabs can be used with any of the plastic dynamics carts from Vernier. The tabs contain magnets and are marked with an ‘N’ to indicate the north pole of the magnet. The other side is blank with a smooth circle marking a good surface for attaching the hook-and-loop disks for inelastic collision experiments. 

Includes:

• 4 replacement tabs containing magnets
• 4 sets of hook-and-loop disk stickers

Note: these tabs are not compatible with the green metal carts of the Vernier Dynamics System (discontinued). If you need parts compatible with these carts, see the Vernier Dynamics System Replacement Parts Kit