These bad boys are the best blades on the market for so many reasons.
1.) Extended work life: These blades last. We get about 6-8 hours of continuous use from these tough tuckpoint blades. For the pricem they're better than any other aggressive cutting blade that we've ever used. The toothed design and holes allow for maximum airflow keeping the blade from overheating. And the teeth on the blade have a high diamond content giving it a longer better cutting life.
2.) Versatility: The blue blades work great for a broad range of applications, hard mortar, soft mortar and everything in between. The blades are 1/4" thick so they're best suited for joints 3/8" and larger.
3.) Aesthetics: Yeah, they look pretty savage, and that's lit.... I heard the cool guys say some of those words, thought I'd pepper 'em in for the younger crowd. You're welcome...
4.) Value: They're very competitively priced.
The blades are available in 3 sizes (4", 4.5" & 5") they measure 1/4" thick, and have an arbor hole size to accommodate either 5/8" (with included bushing) or 7/8" without bushing.