33-inch Golf Practice Putting Green Pin Marker with Attached Ball Retrieval Disk Plus Optional Flag The Easy to Grab 1 inch round black knob makes lifting the marker effortless and eliminates the need to bend over to retrieve your golf balls that have successfully made it into the cup. (1) 33-inch re-enforced white fiberglass ½ inch shaft has a 1 1/16-inch plastic ferrule on the bottom that perfectly fits into any PGA Regulation Golf Cup (Plastic, Aluminum, or Zinc) with a 1 5/32-inch round Neul (Center Hole). The Colored Flag is a Lightweight 400 denier nylon construction which makes the flag sensitive to even gentle breezes, giving golfers a better determination of wind direction. Engineered to maintain their good looks despite long exposure to wind and sunlight. Improved steadfast colors, thanks to a patented DuPont process. Unlike heavy sailcloth flags, ours minimize premature wear on sticks and cups, and decrease the chance of flagsticks being blown out of cups. Jr. Solid Flag (8" x 6") colors are: Red, Blue, White, & Yellow, and Checkered (Various colors) Jr. Numbered Flags (8" x 6") are: Red Numbers on White Flags & White Numbers on Red Flags. All flags come with the plastic tube stitched in so the flag can swivel on the marker pole. Works on poles that are up to 5/8-inch round with a 5/16-inch threaded rod on top for the lifting knob.