A bi-metal bandsaw blade is made with a cobalt high speed steel tooth edge combined with a durable, spring steel backing material. This blade cuts faster and lasts longer than carbon steel blades. It can cut all types of woods, especially ideal for hard woods, i.e. oak, maple, walnut or cherry. It is also most commonly used for metalcutting, i.e. carbon steels, light alloy steels, mold steels and tool steels. There may be a number of other bandsaws or models that use the same blade lengths as the ones listed: 101 inch ( 8 ft. 5 inch, 8' 5" ) band saw blades suit the following models:Wilton? 3575T, 3502; General International? 90-100 M1, If in doubt, to determine bandsaw blade length: 1 - Check the owner's manual of your bandsaw machine for specifications.2 - If the owner's manual is not available, cut your old bandsaw blade so that it lies flat on a level surface, and measure its length. This method will provide the most possible accurate length.