This 6-1/2" diameter blade is for dry undercutting tile, stone, concrete and brick. Use with Nos. 812 Super Cut Saw, No. 820 Heavy Duty Undercut Saw or the No. 825 Heavy Duty Undercut Saw .
Caution: As these blades are subject to possible abuse, they are not guaranteed. Blades are not recommended for cutting metal as sparks can cause a fire hazard.