Robotic Swing Test "4 Yards More" Golf Tee was tested by the golf Laboratories, Inc. in San Diego, CA. Robotized swing testing, is the standard used in new product testing by the USGA. The "4 Yards More" Golf Tee outdistanced the standard wooden tee by an average total distance of 3.9 yards. The test was conducted using a 2 3/4 inch tees and a driver. The Practical Field Test The Industrial Research Center in Glen Mills, PA conducted a field test of the "4 Yards More" Golf Tee vs. wooden tees at Honeybrook Golf Clubs in Pennsylvania. Ten golfers of varying handicaps (male and female) and abilities hit balls off wooden tees as well as the "4 Yards More" Golf Tee. The shots were measured and recorded by the research team. The "4 Yards More" Golf Tee outdistanced the wooden tees overall by 4.2 yards. The test was conducted using a 2 3/4 inch tees and a driver. Variety Pack Contents: 1 - "Short Tee": 1-3/4 inch tee perfect for Par 3s and driving with irons. 1 - "Standard Tee": 2-3/4 inch tee ideal choice for most drivers. 1 - "Driver Tee": 3-1/4 inch for the right launch angle on large head drivers. 1 - "The Extreme" Tee: 4 inch tee longest allowed by USGA and R&A.