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