Pocket/Hat clip has a space on front for a permanent ball marker and space on back for a removable ball marker. 
 
Holds a standard 1" round ball marker on both sides (not included), custom ball marker/medallion can be added. Ask rep for details. 
 
Minimum order is 25 units (blank) or 50 units (with ball marker/medallion add on).
 
Antique Brass 150 units available