SPECS Type : Offensive Balance : Head Heavy Flex : Stiff Lenght : 675 mm Recommanded String tension : 3U: 21-29lbs 4U: 20-28lbs DESCRIPTION The Yonex A STROX 88D Pro badminton racquet brings more dominance for players that like to play in the back court thanks to new technology and a dialed in sweet spot. The A STROX 88D Pro is a made in Japan badminton racquet with new materials and specs.