Crain Undercut Saw 821 Carbide-Tipped Blade Fits 812, 820, 825 as Replacement Blade 6-Pack 8 x 18-inch Power Trowel Combo Blade Blue (4 Pack) A 21" long 1/2" square

A 21" long 1/2" square steel mounting is centered on the blade to help keep the trowel flat

Carry tank capacity of 8 liters (1

Accepts wood or specialty blades (sold separately)

easy to maneuver tool

Crain Undercut Saw 821 Carbide-Tipped Blade Fits 812, 820, 825 as Replacement Blade 6-Pack 8 x 18-inch Power Trowel Combo Blade Blue (4 Pack) A 21" long 1/2" square821 Carbide Tipped Blade replacement blade for the Crain No. 812 Super Saw, No. 820 Heavy Duty Undercut Saw, or No. 825 Heavy Duty Undercut Saw. The large 6 " diameter allows these Crain saws to fully undercut inside corner areas. The 40 carbide teeth and precision formed steel blade body produce smooth and accurate cuts. For use in undercutting wood doors, wood jambs, wood bases, or drywall only. Not for use on any metal, masonry, stone, or ceramic