This is your basic spool of leaded solder with a 63/37 water soluble resin core. 0.8mm gauge and 50 grams. This is a good spool for more advanced users that should last 3-6 months depending on how often you solder.
A ready to ship prebuilt All-Terrain 4WD robot. It features 10" pneumatic tires and IG42 078RPM Gear motors. Controller, battery, and charger included. Also included is a cover with 80/20 1" extruded aluminum rails.
Ready to ship prebuilt tracked platform with DeWalt battery adapter. This lightweight platform uses IG42 122 RPM motors, all-terrain tracks, and an RC control system. Powered by standard DeWalt batteries for ease of use.