The black decker ks777k sightline jigsaw is capable of all diy tasks variable speed improves the quality of cut through various materials and tasks the sightline channel provides better views of the cutting line and improves accuracy with a tool free universal blade clamp that accepts both u t shank blades the integral dust management system provides a dust blow feature and dust extraction it has a magnetic on board blade storage for quick and easy access to spare blades and accurate preset