"These prinzing balll valve lockout tagouts are made from ultra-tough polypropylene and can withstand temperatures from -20°C to 80°C.Type = Ball Value LockoutMaterial = PPNumber of Locks = 4Attachment Point Minimum Size = 1\/2 (Open Lockout) in, 1\/2 (Small Out Pipe Lockout) in, 2 (Large Lockout) inAttachment Point Maximum Size = 1.25 (Small Lockout-Open Pipe) in, 2.5 (Small Lockout-Out Pipe) in, 8 (Large Lockout) inLock Shackle Maximum Diameter = 7.24mm"