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