Junior Hacksaw Blades are manufactured from the finest grade of high speed steel raw material. The teeth are properly hardened and tempered to get optimum blade life for professional applications. Junior Hacksaw Blades are manufactured from the finest grade of high speed steel raw material. The teeth are properly hardened and tempered to get optimum blade life for professional applications. These are available in three variants : TPI Recommended Use 14 Coarse teeth for cutting without much effort Soft plastics, paperboard, hardboard, molded wood etc. 24 Medium teeth for precise sawing work All kinds wood, gypsum, plastics, metals, aluminium, non-ferrous metals, channels, pipes etc. 32 Fine teeth for high quality sawing works All kinds of metals, thin section non-ferrous metals, special steel, alloys, etc. Size in inchesSize in mmTPI 6 X 1/4 X 0.018 150 X6 X0.45 14, 24, 32