“DSR” Hubs – for assembly with “AR” plate sprockets to make READY SPROCKET HUB TYPE DSR double-single of substance sprockets. Finish bore hubs have got regular keyway and 2 setscrews.
Ready Sprockets are a variety of sprockets and hubs drilled and tapped for simple, convenient assembly with regular hex head cap screws. For No. 35 through No. 100 Chain, with share completed bore hubs to support shaft sizes through 2-3/4″ diameter, plus a variety of square, hex, spline, and tapered essential bores.