bi-metal construction flexibility increased heat and wear resistant will not shatter and fast cutting long life and safe operation suitable for pipe, tubing and solids cuts wood, plastic or any machinable metal including conduit, stainless steel tubing, angle iron, copper tubing, structural materials, etc. overall teeth per tooth pitch blade steel length inch(tpi) shape type construction 10"/255mm 18 wavy regular straight bi-metal -flexible 10"/255mm 24 wavy regular straight bi-metal -flexible 10"/255mm 32 wavy regular straight bi-metal -flexible 12"/300mm 14 wavy regular straight bi-metal -flexible 12"/300mm 18 wavy regular straight bi-metal -flexible 12"/300mm 24 wavy regular straight bi-metal -flexible 12"/300mm 32 wavy regular straight bi-metal -flexible