IRWIN ® MARATHON ® Carpenter Saws are driven by input from trade professionals and supported by the world-class linear edge engineering behind the MARATHON ® brand. IRWIN ® has developed one of the most advanced lines of carpenter saws available. From the innovative M2 ™ Tooth Technology and Easy-Start ™ Teeth to the ergonomic ProTouch ™ handle - professional users will experience a new level of cuttin performance.