Great Neck Mayes 10199 Line Level 3 in.

The 3 Inch Line Level 2 Piece Set by Mayes includes 2 vials that are compact and lightweight yet tough. A durable high impact composite polymer frame protects the vial. It's easy to use. Just string your line, then hang the level from snag-free hooks. It takes the guess work out of landscaping and building projects. It's ideal for small precision surfaces too. High Visibility Lightweight Plastic Large Bubble is Easy to Read from All Sides (Accurate to within 0.001 Inch) Patented Shake-Proof Line Clips Flat Surface is Ideal for Surface Leveling Snag Free Hooks Made in the USA