A sprocket[1] or sprocket-wheel[2] is a profiled wheel with teeth, cogs,[3] or even sprockets[4] that mesh with a chain, track or other perforated or indented material.[5][6] The name 'sprocket' applies generally to any wheel upon which radial projections engage a chain passing over it. It is distinguished from a gear in that sprockets are never meshed together directly, and differs from a pulley in that sprockets have teeth and pulleys are smooth.

Sprockets are used in machinery to transmit rotary motion between two shafts where gears are unsuitable or to impart linear motion to a track, tape etc.

Sprockets are of various designs, a maximum of efficiency being claimed for each by its originator. Sprockets typically do not have a flange. Sprockets and chains are also used for power transmission from one shaft to another where slippage is not admissible, sprocket chains being used instead of belts or ropes and sprocket-wheels instead of pulleys. They can be run at high speed and some forms of chain are so constructed as to be noiseless even at high speed.

THERE ARE FOLL TYPES OF SPROCKETS: STANDARD SPROCKETS, TAPERLOCK SPROCKETS (photo will be emailed.), TWO STRAND SPROCKETS, Slat Chain Sprockets(photo will be emailed.), Elevator Sprockets. THESE SPROCKETS ARE AVILABLE IN ALL SIMPLEX , DUPLEX , TRIPLEX AND SO ON