Sharp tooth resists loading and improves cutting speeds. Forged from high carbon steel, through fine process, with high hardness and strength. This package is a total of 12pcs saw blade, convenient to replace the broken or worn one. Curve sawing is very relaxed, the blade is not stuck. The thicker item you want to cut, the thinner saw blade should be. It is suggested that use #1, #2, #3 saw blade to saw the metal; #4 #5 #6 #7 is suitable for wood sawing; #8 can be applied on sawing plastic. Specification Material: Carbon Steel Options: #1, #2, #3, #4, #5, #6, #7, #8 (The diameters are sorted from small to large) Quntity: 12pcs/set Size: Approx. 13 * 0.1 * 0.1cm / 5.12 * 0.04 * 0.04inch Weight: 4 - 11g Type: Saw Blades Package List: 1 * Set of 12 Saw Blades