NEW Wilson K Factor Six One Tour 90. Unstrung weight: 11.3 oz. Beam width: 18 mm Straight Beam. String pattern: 16 Mains / 19 Crosses. The item "NEW Wilson K Factor Six One Tour 90 Pro Staff Asian Version" is in sale since Wednesday, March 27, 2019.This item is in the category "Sporting Goods\Tennis & Racquet Sports\Tennis\Racquets". The seller is "kujune" and is located in Suwon-si. This item can be shipped worldwide.