Suit For: all Recurve Bow . With the aid of Limb Line Gauges you can check the arrow position on the bow and in respect of the position of the Sight Tunnel, limbs and the centre shot . Easily align the string, limbs , arrow and sight Motor sprocket 12 teeth for chain 428er 1 inch TRITAN Finished Bore B-Hub Sprocket features one setscrew over the keyway and a second setscrew at 90 degrees. The 50BS12 1-1/4" sprocket is a finished bore style that has a standard keyway & 2 setscrews. Our sprocket teeth are hardened to help prevent tooth wear. A... One setscrew over the keyway and a second setscrew at 90 degrees With high quality carbon steel construction, this sprocket with 5/8 inch pitch has 12 teeth and 1-1/4 inch finished bore. Includes Keyway and 2 Set Screws 1 Inch Bore Martin 50B12 Sprocket 12 Teeth #61003 For Sale Online 40 Chain Sprocket