4 Legged Ball Valve Lockout, 0.313 in Diameter Shackle, 3.05 in W x 5.31 in D x 4.07 in H, Red ORS NASCO Quality aluminum oxide abrasive Quality aluminum oxide abrasive convenient point of use options enhance productivity Available in a variety of convenient formats reduce lost employee time and cut insurance costs Patented design and ultra tough polypropylene material make these devices a great choice to assuredly lock out ball valves Lockout devices lock out pipes 1 2 in to 2 1 2 in diameter and can lock valves open on pipes from 1 2 in to 1 1 4 in diameter Ultra tough polypropylene resists temperatures from ( 18° to 79°C) Proper lockout tools and warning devices can save lives