Balance Certified Drop In weights #5 - #14 are great for putters and allow you to tune in your desired weight and feel in your hands.  The lighter drop in weights, #5- #9 are perfect for putters that have been shortened.   The heavier Drop In weights (#11 - #14) are great for players who like a heavy feel in their hands with a putter.  Drop In Weight (#5) weigh 60 grams and increase 10 grams every increase in #.  The heavier drop in weights weigh 110 grams for # 11 and move up 10 grams each weight through #14 which totals 140 grams.   4 star product