This pack of 24 pga tour booster tees have a crown feature that helps to reduce friction so you can drive the ball further the set contains 8 of each size tee 8cm 315 blue ones 65cm 25 red ones and 5cm 2 orange ones the durable polycarbonate tees conform to official golf standards and are extra long so they will accommodate large drivers this official pga tour merchandise is brightly coloured which makes finding them after use easy