Need precision in your workshop? This KS TOOLS 400mm Precision Straight Edge is exactly what you're looking for. KS TOOLS has been a leading international tool supplier since 1992, so you know you're getting quality that professionals trust. This straight edge features a construction style that's far superior in strength and maintains exact torque length perfectly. All of their interchangeable heads are made from a single piece of alloy steel - no weak points or joints that could compromise accuracy. The dovetail design provides an exceptionally strong connection and allows for complete head interchangeability across different torque ranges. At 400mm long, it's the perfect size for most workshop applications without being unwieldy. Whether you're checking surface flatness, aligning components, or doing precision layout work, this straight edge delivers the accuracy you need. KS TOOLS doesn't just sell good tools - they're passionate about creating intelligent, long-lived products for users across different industries. With modern production processes, internal quality insurance, and DIN ISO 9001 certification, they're committed to excellence. This is one of those tools that once you have it in your workshop, you'll wonder how you managed without it. It's built to last through years of professional use while maintaining its precision. If you take your work seriously, this straight edge is a must-have addition to your tool collection.