Locking Cylinder Cap, For Maximum Padlock Shackle Diameter 1/4 in, For Neck Ring Diameter 3 1/8 in, For Pressure Type High, For Thread Type 11 UNF, Lockout Material Steel, Maximum Number of Padlocks 1, Includes (1) Brass Padlock, (1) Lockout Device, (3) Keys, Lockout Color Yellow, Overall Height 9.97 in, Overall Width 3.86 in, Standards OSHA 1910.147