Wilson Revolve Spin 17G Tennis String - Black . High Quality Tennis Balls The "AG" (All Ground) designation

The "AG" (All Ground) designation signifies that the outsole is optimized for the durability required by hard courts while maintaining the traction necessary for clay play

Former Luxilon 4G Users: If you like the firm

extending the lifespan of the bird by up to 50–70%

heavy-gauge machine stitching engineered for seamless pressure balance and long-term seam durability under repeated heavy impacts

Durability Index: Considerably outlasts standard feather shuttlecocks

Wilson Revolve Spin 17G Tennis String - Black . High Quality Tennis Balls The "AG" (All Ground) designationThe Wilson Revolve Spin 17G (1. 25 mm) Black is a shaped, high spin co polyester string engineered for aggressive groundstrokers who prioritize maximum topspin generation, ball bite, and control. Featuring a pentagonal (5 sided) profile and a slick low friction coating, this thinner 17 gauge variant offers enhanced playability, ball pocketing, and spin potential compared to its thicker 16G counterpart. Performance Profile Pentagonal Mechanical Bite: