This is a 9V battery clip typically used for our wireless cameras. The ID is 2.1mm, the OD is 5.5mm. Center positive.
9V Battery Snap with 12" Leads
This robot has a pivot center with custom length sides and 10 inch tires with IG52 136 RPM motors. We have included everything to make it ready to run including batteries, chargers, and a controller. Customized version of TP-046-000.
100 pack of square cable tie mounts with adhesive backing. 3/4 inch.