I have the 510/610/710 NRG Short Hub, it's the model 142 and a Nardi Woody Wheel. The stock turn signal cancel roll pins on my stock '72 wheel doesn't fit the holes in the NRG hub (shorter depth, larger hole diameter). I measured the roll pin hole as best I could, it appears to be 5/32" or 4mm. I went to the hardware store, bought 6 of the metric button socket machine screws (5mm X 16mm) to mount the quick release (also NRG) to the NRG Short Hub, as well as picked up 2, 5/32" x 3/4" long roll pins and everything fit and worked perfectly.