STANLEY 20-045 FATMAX SAW 15"" BLADE IS 15 THICKER THAN CONVENTIONAL SAWS FOR STRAIGHTER CUTS WITH LESS BINDING. SHARPTOOTH SAW TECHNOLOGY USES THREE CUTTING SURFACES TO 50 FASTER THAN CONVENTIONAL STANLEY HAND SAWS. INDUCTION-HARDENED TEETH STAY SHARP UP TO 5X LONGER THAN STANDARD TEETH. THICK ERGONOMICALLY DESIGNED GRIP RESISTS SLIPPING AND ADDS COMFORT. BACK OF SAW CAN BE USED TO MARK 45 degrees AND 90 degrees ANGLES.