PM Series ARS Precision Folding Saws. These saws feature long, curvature ground blades (thickest at the teeth and top and very slender in the center of the blade) for fast easy cuts. The impulse hardened blades are precision ground and Marquench hardened to hold their edge an extra long time. All metal construction, soft rubber coated handles, and multiple blade angles provide optimal durability and functionality. Available with 8" or 9.5" blade and 3mm or 4mm tooth pitch. (3mm is better for carpentry and drywood, while 4mm is ideal for pruning).