Cuts fiber cement siding up to 5/16" thick. Smooth, fast, and dust-free operation. Based on a 1/2" 6.5-amp motor. Reversible blades machined from solid tool steel. Average blade cost is $3 per house.The SS204 uses the same award winning head as it"s big brother the SS404. While the SS404 is geared toward the professional, the SS204 is a great lower cost alternative for the non-professional audience who is looking to side a few houses.