Specifications : - 668A.8: for thick semi-rigid steel - recommended thicknesses: 6 - 25 mm. - 668A.10: for special steels or alloys - recommended thicknesses: 3 - 6 mm. - 668A.12: for stainless steel, copper - recommended thicknesses: 1 - 3 mm. Blade made of cobalt steel: more resistant to heating, the teeth wear less quickly. The same result throughout the life of the saw blade. Better flexibility and a clean cut. Suitable for all materials. Blade length: 300 mm. Box of 10.