The Stabila 48" and 16" High Strength Frame Level Set (37816) is designed for accuracy and dependability. With a rib-reinforced aluminum frame and an electrostatic enamel finish, these levels are made to last in demanding conditions. The 16" level has one rubberized hand grip while the 48" has two for maximum comfort during use. Both levels feature removable, shock-absorbing endcaps to protect surfaces while also providing the level with impact protection. The vials are made of block acrylic glass and cast in the frame with epoxy. They are certified accurate and guaranteed for life.