The DEWALT reciprocating bi-metal construction blades combine HCS and HSS for increased flexibility, durability and have been designed for use with cordless machines. The universal shank fits all major brands including DEWALT, Bosch, Hitachi, Flex, Makita, Metabo and Skil and these blades are ideal for fast cutting of metals, wood and plastics. The DEWALT DEWDT2344QZ reciprocating blades are ideal for fine, fast cuts, especially for curve cutting in wood and plastic. DEWDT2344QZ