These 12mm Hex Adaptors allow you to attach our wheels to drive shafts. Simply insert a 4mm shaft into the adaptor and tighten the set-screws. When applicable, we recommend aligning the set-screw to the flat part of the shaft - this will give you a better hold.
Bore | 4mm |
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Material | Aluminum |
Weight | 0.35 oz (10g) |