Small enough to fit in your bag yet large enough to easily grab the golf ball Black Retriever will fit small to medium grips Red Retriever will fit medium large to large grips Small enough to fit in you bag yet large enough to easily grab the golf ball Featuring The Royal Ball Retriever. A sleek high quality ball retriever that fits onto your putter grip. We have two sizes to choose from, the Black Retriever will fit small to medium putter grips, the Red Retriever will fit medium to large putter grips.