IRWIN 343 mm Garden Saw, Hardened Teeth. 1.00 mm thick blade made of high-quality C75 cold-rolled steel. Very sharp hardened teeth with double-sided grinding. The saw blade is equipped with recesses for better chip removal. The tool blade is coated with a water-based anti-corrosion varnish, which is 4 times more reliable and durable than traditional coatings. Ergonomic two-material handle, attached with two screws for secure fixation. Easily saws branches and tree knots. For hard-to-reach work areas, a specially designed handle shape with a hole for a cutting has been developed. The IRWIN® Jack® range of saws are best-in-class hand saws for modern professionals. Advanced tooth technology and the ergonomic ProTouch™ handle make IRWIN hand saws the best choice for speed, ease, and quality of cutting.