ShopTJB Practice Putting Green - Natural or Synthetic - 6" Regulation Golf Cup - Bright White Plastic Durable Bright White Cycolac & Regulation 6" plastic cups feature minimum taper for a snug fit. Used On Golf Greens World Wide! Same ones that are include with every synthetic putting green kit. Put one in your lawn and be the envy of your golfing buddies! Your own practice putting green!