DUNLOP T676673 Nitro 21 Junior Tennis Racquet The New Dunlop Nitro 21 Junior Tennis Racquet Dunlop Racquets Great For Ages 4-6 | 7.4 Oz For Easy Handling | Great For Learning Strokes Size - (See Description) | Color - (See Description) Authorized Dunlop Dealer. All racquets are strung and ready for the courts! SEE SELLER DETAILS FOR RETURN POLICY.