Bullet_point: ['Double single strand sprocket with two sets of teeth around the circumference for use with two separate single strand chains to increase the load capacity', 'Pitch of 3/4 inch for size 60 chains', 'Sprocket bore has tapering grooves for inserting and locking into place a taper bushing that fits the diameter of the shaft', 'Sprocket teeth hardened by electrical induction or flame to increase teeth durability against wear, lengthening the service life of the sprocket', 'Type A sprocket with a simple plate, bore, and no protruding hub on either side for applications where mounting space is limited'] (Page 1)