Master Lock Rotating Gate Valve Lockout, for 4" - 6-1/2" Valve Handle Diameters Nesting halves rotate to form a hollow circular shell that surrounds a gate valve handle and combines with a padlock (sold separately) to help protect against accidental valve opening during maintenance or repair Up to four locking holes provide the ability to require multiple authorizations to allow operation of a locked out gate valve Rotating design for installation in confined spaces and a compact storage footprint Red Zenex thermoplastic shell is nonconductive and functions in extreme temperatures: -50 to 350 degrees F (-46 to 177 degrees C) Limited lifetime warranty