7 1/4" 40 Tooth carbide saw blades. If you are using a plain steel blade on your table saw upgrade now to our high quality super hard tungsten carbide blades! our brand new 7 1/4" 40 tooth carbide blades features: super hard tungsten carbide tips that keep their edge longer and can resharpened hardened steel precision ground blank for ultra smooth operation 8000 max rpm true 5/8" arbor hole with 7/8" diamond UA universal knockout cooling slots that dissipate heat and keep your cut true 40 tooth configuration for fast smooth all-purpose cuts use these high quality carbide blades to power through the toughest jobs in your workshop.