Locking Cylinder Cap, For Maximum Padlock Shackle Diameter 3/8 in, For Neck Ring Diameter 3 1/8 in, For Pressure Type High, For Thread Type Fine, For Valve Wheel Diameter Not Applicable, Lockout Material Steel, Maximum Number of Padlocks 1, For Use With High Pressure, Fine Thread Cylinders, Includes (1) Brass Padlock, (1) Lockout Device, (3) Keys, Lockout Color Yellow, Maximum Temperature 203 Degrees F, Minimum Temperature -31 Degrees F, Outside Diameter 3.858 in, Overall Height 9.962 in