Wilson 2018 Ultra 100 Countervail Tennis Racquet - Quality String - CV Crisp, lively, all court racquet for Intermediate to Advanced Player Featuring Countervail, a special vibation dampening material built into the carbon fibre. 100 head, 11.2 ounce strung, 4 head light, 16x19 pattern Strung Wilson quality Sensation multi-filament string