The Pirayais a perfect blade for Fire Departments as they are rarely in a position to determine the "exact" type of blade required for a particular emergency. Chances are the Pirayablade will cover the situation.
If you know you are venting a roof use the TEAM Maxibladeor Team Blazer Bladefor fast rapid roof cutting. Everything else, use the Piraya Diamond blade.
concrete
masonry
metal
plastic
wood
rebar
copper
glass block
windshields
auto parts
tile
aluminum
stainless steel
corrugated roofs
*not intended for heavy wood cutting, venting a roof use the TEAM Maxiblade or Team Blazer Blade for fast rapid roof cutting