Samsons rubber industries provides power transmission belts under the brand name helicord. Helicord synchro-drive timing belts are now available for most of the automobiles manufactured in india and some imported automobiles. Helicord synchro-drive timing belts are designed to last longer, carry higher loads and operate at higher temperatures with reduced noise levels. Standardised on a tooth pitch of 3/8th inch [9.525 mm] for the drive system belt and pulleys [on the camshaft, crankshaft and ancillaries], there are few who have adopted an 8 mm pitch [with curvilinear tooth profile]. While the three basic tooth profiles are the trapezoidal, the curvilinear and the modified curvilinear profiles. There are a number of variations evolved by belt manufacturers with a view to improve performance and reduce noise levels as well as to offer equivalents to other manufacturers belts. These belts have been developed to match precisely and operate efficiently and reliably in the drive systems of the whole range of indian cars - some after tests and trials jointly carried out with the vehicle manufacturers.