Our top range of those with exchangeable blades! For the finest cuts and high surface quality, with extended back to give blade greater stability. These saws are resharpenable. The entire blade is made of very hard steel and therefore it is no need for impulse hardening for these saws. If you do not know which saw is the right for you, consider that it is more easy to make very accurate cuts using a saw with less blade width. The blades are interchangeable!