The minimum allowed diameter of a golf ball is 42.67 mm and its mass may not exceed 45.93 g. Modern golf balls have a two-, three-, or four-layer design constructed from various synthetic materials. The surface usually has a pattern of 300-450 dimples designed to improve the ball's aerodynamics by reducing the ball's drag-inducing wake and allowing spin on the ball to create lift. The method of construction and materials used greatly affect the ball's playing characteristics such as distance, trajectory, spin and feel. Harder materials, such as Surlyn, usually result in the ball's traveling longer distances, while softer covers, such as urethane, tend to generate higher spin, more "feel" and greater stopping potential. Golf balls are separated into three groups depending on their construction: two-, three-, or four-piece covers. Generally four-piece golf balls tend to be the most expensive, though price is no assurance of quality.
A ball mark repair tool (also known as a pitchfork or divot tool) is used to repair a ball mark (a depression in the green where a ball has hit the ground on its approach shot). Some tees contain such a tool at the end, for pure convenience when on the green. To repair a ball mark, one pushes the tool next to the mark and pushes gently inwards from all sides, loosening the compacted turf to allow rapid regrowth of grass, and then flattens the mark with the smooth flat bottom of the putter to smooth the putting surface.
With titanium and carbon fiber among the materials of choice, golf can be an expensive hobby. Fortunately, with the great selection of new and used equipment at eBay’s golf store, you can find the golf gear you need without breaking the bank. Whether you’re looking for range balls for practice, hybrid clubs or the latest high-tech driver, eBay has golf gear for everyone.