The Luxilon Big Banger Alu Power Spin 127 tennis string is widely used on the Pro Tour. The string ensures tour level power, control & durability. It has a pentagonal shape, which provides extra spin. The string has a 1.27mm gauge & is 12.2m (40ft.) long. The Luxilon Big Banger Alu Power Spin 127 is ideal for hybrids.