Kapro 325M Magnetic Lock Combination Square with Zinc Head, 12-Inch Combination square for verifying 90- and 45-degree angles in woodworking, stonemasonry, and metalworking applications Magnetic lock with six rare-earth magnets holds the rule in place for accurate measurements 12-inch rule with etched graduations in inches and centimeters are staggered in a height pattern for readability Made of stainless steel and cast zinc for durability Includes stainless steel scribe and belt holster