Ryobi ZRCSB144LZK 15 Amp 7-1/4 in. Heavy-Duty Circular Saw with Exactline Laser (Certified Refurbished) Powerful 15 Amp motor for high performance cutting Exactline laser alignment system improves cutting accuracy Adjustable level from 0 to 51.5 degrees, with positive stops at 45 degrees and 51.5 degress Air diverter and dust exhaust keep the line of cut clear while directing particles away from the user Spindle lock for easier blade changes