MAGICYOYO Series K2 Style String Trick (1A, 3A, 5A) Weight: 64g Diameter: 55.33mm Width: 42.67mm Gap Width: 4mm String: Pack of 12 100% Poly yoyo strings for replacement. String Length: 43.31 in/ 110 cm Body Material: PC Bearing:regular flat bearing (slim bearing). This combo makes a great Christmas gift for your little boys, girls, adults, or friends who are passionate in the yoyo game! Please attach the yoyo string according to the instructions, DO NOT TAKE THE YOYO APART. MAGICYOYO responsive K2 for kids, binngers’ daily practice.