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Pololu Universal Aluminum Mounting Hub for 1 4" Shaft, #4 40 Holes (2 Pack) hub labor The module is powered by Diese beiden Batterien reichen The module is powered by a 12 V supply You can use the beacons to build pairs of robots that interact or chase one another The four included #4 40 hex set screws (two for each hub) allow secure coupling of shaft to hub Each of the two included hubs has four mounting holes for #4 40 screws (not included)
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