The LU85R blades from Freud are the only crosscut blades that produce cuts so good they are considered Ultimate. MicroGrain carbide tips thick enough for several re-sharpenings. Thick MicroGrain carbide tips. Laser cut blade bodies and expansion slots. Kickback reducing design. Tri-metal brazing for impact-resistant tips. Perma-SHIELD permanent coating is a superior aluminum alloy coating that helps reduce friction, heat build-up, gumming, and is resistant to rust, which add up to longer blade life. Covered by Freud's Limited Lifetime Warranty.