Castellated, continuous rim blade with 7mm deep rim for fast, smooth cutting and long life. Wave form body aids dust removal, which is ideal for deep cuts in concrete. For general building use on stone, concrete, pipes, brick, roof tiles, patio slabs and lintels. Max 5900rpm. Compatible with 20mm bore petrol saws. Wet or dry use. Optimum results if used wet. Castellated, continuous rim blade with 7mm deep rim for fast, smooth cutting and long life. Wave form body aids dust removal, which is ideal for deep cuts in concrete. For general building use on stone, concrete, pipes, brick, roof tiles, patio slabs and lintels. Max 5900rpm. Compatible with 20mm bore petrol saws. Wet or dry use. Optimum results if used wet.