Finished Bore Roller Chain Sprockets Finished Bore Sprockets: Stocked for No. 35 through No. 80 chain, with standard keyway and setscrew. Many sizes stocked with and without induction hardened teeth. Stainless Steel Finished Bore Sprockets: Not available from stock anywhere else! We carry a wide variety for No. 25, 35, 40, 50, and 60 chain with 2 setscrews. More Stainless Steel Products Ready Sprockets: An economical assortment of sprockets and hubs drilled and tapped for simple, convenient assembly with standard and hex head cap screws. Stocked for No. 35 through No. 100 chain, with finished bore hubs to accomodate shaft sizes through 2-3/4 diameter, plus a variety of square, hex, spline, and tapered key bores. More Ready Sprockets products/services | gear making | overview | faq | site map | contact | home