A perfect science activity for both kids and adults

spur gears

This tire lives up to the looks and height of its full scale counterpart

Realistic down to the decal details on the stand

Ultra Power Technology - UP7 AC 200W / DC 400W Dual Port Multi-Chemistry Smart Charger GMA52000 A perfect science activity forThe UP7 400W 10A Smart Dual Channel AC DC Charger from Ultra Power is a dual port charger capable of up to 200W of total power on the built in AC Power Supply, or 400W of total power when powered by an external DC power source (sold separately). Each charge channel supplies up to a maximum of 10 Amps to charge your batteries quickly, and the integrated balance port allows you to charge them safely. The dual charge channels are independent, and allow