UMA Engineering is best industry leading manufacturers and suppliers of various timing pulleys taper lock. All timing pulley taper lock are made of cast iron or steel and have a phosphate finish for added durability. Metric taper lock are available in 14mm pitch pulley for pitch timing pulley with ref 14mm 115mm sections. The 14mm is a heavier duty version with a different tooth profile. Taper lock can be made in taper bore manufacturers from aluminium or cast iron.