We manufacture superior export quality yoyos and card holders. Our yoyos are made of vergin food grade abs material and processed in Micro processor controlled machines with 100% quality check. The inside rotating part (bobbin) is made of high wear resistance gfn Nylon material. The string is made of high tensile strength nylon material. Spring is imported from germany and press button is nickel free from thiwan. 50 pieces in a box approx 650gms.