https://www.acehardware.com/departments/tools/hand-tools/levels/2027473
Spec Ops 48 in. Aluminum Box Beam Level with Bungee 3 vial Mfr# SPEC-LEVEL48 - Ace Hardware
The Spec Ops box beam level with bungee features a patented bungee fastening system that securely mounts the level to plastic pipes, 2X4s and other surfaces....