VDD-HUB20 20mm Blade Hub <p align="left"><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">For blades with a 20mm bore. 6061 T6 Aluminum Adapter with two 3mm countersunk screws, 3mm setscrew for the shaft and hex wrench included. Stock bore is 0.126", but can be drilled out larger if you need, up to 6 or 7mm. </font></p> <p align="left"><font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">Hub weighs 0.35 oz (9.92 grams) </font></p>
For
blades with a 20mm bore. 6061 T6 Aluminum Adapter with two 3mm countersunk
screws, 3mm setscrew for the shaft and hex wrench included. Stock bore
is 0.126", but can be drilled out larger if you need, up to 6
or 7mm.
Mine arrived with a three screw configuration instead of just two as was pictured, which still didn't bump it over the ten gram mark. It's very well built, was a nice and snug fit to the VDD2 blade I got at the same time, and the set screws hold it to the shaft quite tightly. I can't wait to spin it up in the arena and send someone's robot flying.
Team Think Tank (who complete the order once placed through Robot Marketplace) are nothing but helpful and accommodating, and I'm grateful that they've made so many of their parts available!
$20.00 
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Fantastic.
VDD1 Blade
VDD2 Heavier Blade
VDD3 Smaller Blade
VDD4 Lighter Blade
VDD5 Crosscut Blade
SS VDD0 4-9/16 inch blade
SS VDD1 4-3/8 inch blade