The Precision Roller Chains have satisfied the British Standard (B.S.) and American Standard (A.N.S.I.). They are specifically made having a 1/4" to 2.1/2" pitch, in simplex and multi-strand forms. These are intended to be used for powers from fractional to 2500 kW, with a speed of up to 25 m/second. These are produced using both modern manufacturing technology and standards.