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 Ready to use in less Ready to use in less than one minute snag free clip conforms to body of light 2 meter impact resistance tested Ergonomically designed for maximum hand comfort 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 reduce lost employee time and cut insurance costs