High Quality Spirit Level Vial Durable and Waterproof Front and Rear Level Bubble. Custom Branding: Your brand can be carved on the level for personalized branding. Durable Aluminum Frame: Heavy duty casting aluminum frame prevents warping or twisting. High Precision Vials: Two fixed vials with professional accuracy of 0.5mm/m. Ergonomic Design: Features a human engineering handle and plastic end caps. Flatness Guarantee: Double milled surfaces ensure high flatness for accurate measurement. Customizable Options: Available in all sizes, colors, and designs to meet specific needs.