Thread size is 3/8x16.

    ATTENTION!!!  Meucci cues have changed the thread size of their weight bolts 3 times over the years.  These weoght bolts fit the early model Meucci cues from the 1970's and 1980's.  You will have to determine what size weight bolts your cue requires.   If you are unsure about the correct weight bolt size, message me.  Maybe I can help.     We all know that a MEUCCI is THE MOST POWERFUL HIGH PERFORMANCE CUE EVER MADE.  But, if it's not properly balanced to YOUR specs it may be uncontrollable.  Now for the first time you can "FINE TUNE" your MEUCCI.  With this WEIGHT BOLT MANAGEMENT SYSTEM you can experiment until you find the sweet spot and take your game to new heights. The right cue is worth it's weight in gold and balance is what it's all about.   Plus, a properly balanced cue will give you confidence in your stroke.  You can adjust the weights for the balance and weight you like.  You can put them  towards the front or towards the rear.  Wherever you want it to stay it stays.   Anyone who owns a MEUCCI should have this WEIGHT BOLT SYSTEM.   Retails for $39.00.   FREE SHIPPING in the USA