FingerTech Lightweight Twist Hubs THIN (pair) 3mm x 0.50"

Nov. '24 update: New and Improved! Now includes a metal threaded insert so you can really crank down the setscrew AND add threadlocker, and stronger washer indentations so pliers don't punch through. New Lightweight Twist Hubs are great for 1lb antweights all the way down to 150g robots!  Made from injection-molded blue glass-filled nylon for high strength and extremely low weight.Twist Hubs are great for 1lb antweights all the way down to 150g robots!  Made from injection-molded blue glass-filled nylon for high strength and extremely low weight. Twist Hubs easily and securely mount FingerTech Foam Wheels.  Foam wheels are the preferred choice for combat robots because they absorb impacts and save your drive gearboxes. The foam tire is held tightly by a custom locking washer, which must be pressed in and turned 90 degrees to release. The hub is secured to the motor shaft by a strong 8-32 setscrew. 3mm shaft bore fits Silver Sparks, Repeat Drive, N20 and most other common small robot drive motors. Specifications: **The hub is secured to the motor shaft by a large 8-32 setscrew. Keep in mind this is plastic (very strong, but still not as strong as aluminum) - the setscrew does not need to be overtightened. "Firmly snug" is enough to hold the wheel tightly on the flat of a motor shaft. Width 0.50". Shaft Bore 3mm. Weight: 3.7g each (7.4g per pair).  Half the weight of aluminum Twist Hubs. Anodized 6061 aluminum for high strength and low weight. The foam tire is held tightly by a custom locking washer, which must be pressed in and turned 90 degrees to release. The hex flange will allow you to keep driving even if the locking washer is destroyed. The hub is secured to the motor shaft by a strong 8-32 setscrew.  Requires: - 5/64in hex wrench - Foam wheels (FingerTech Foam Wheels, Lite Flites or Lectra Lites) - Needle Nose Pliers or FingerTech Twist Hub Key