The first mystery box contains B-grade monometal + B-grade bimetal.
P.S: In order to let more people enjoy it, each person is limited to purchasing two.
The second mystery box contains A-grade new mystery monometal + A-grade new mystery bimetal + B-grade monometal.
PS： A-grade bimetal is our 7th-anniversary yoyo, which is an outer ring 7068+SS yoyo. A-grade monometal is a compact organic yoyo made for fun and everyday carry
B-grade bi-metal yoyos cover vultures 、peregrine、 hummingbirds 、tachyon and baryon.
B-grade monometal yoyos cover KOI、magpie 2.0、shortcut、dove、sunbird.