Duncan Yoyo Intermediate Butterfly DURABLE CONSTRUCTION: The Duncan Butterfly XT Yo-Yo is made from a high-impact plastic designed to withstand plenty of use. BALL BEARING AXLE FOR LONG SPINS: Features a ball-bearing axle, offering 10x the spin time of the original Butterfly Yo-Yo. The axle setup employs a yo-yo sleeve with tiny metal balls inside which allows the yo-yo to turn freely. Ensures a long spin time. WIDE SHAPE: The wide, flared "butterfly" body shape of Duncan's Butterfly yo-yos is designed to be ideal for string tricks. INTERMEDIATE LEVEL YO-YO: The Butterfly XT Yo-Yo is one of Duncan's intermediate level yo-yo models, specially designed for more advanced skill levels and tricks. PRODUCT DETAILS: Starburst response system. Weighs 53g. 55.9mm diameter. 3mm wide string gap. Colors may vary. Includes 1 yo-yo.