Golf Deals offers golf tees, step down tees, used golf balls, etc.. at competitive prices. The diameter of the golf tee cup is the standard 7/16" with the shaft being a diameter of 3/16". The 2 1/8" and 2 3/4" golf tees are considered the standard / traditional tee. The 3 1/4" golf tees are made specifically for today's oversized drivers. The step down tees are designed to guarantee a consistent ball height with every shot. They can be used with irons or woods.