78D 우레탄 볼링공 이렇게 안쓰면 손해입니다.

#Bowling #78DBowlingBall #78DUurethane #BowlingTeacherLee Hello! The bowling world has now officially entered a new era of change! The urethane ban, which mandates the use of only 78D urethane balls, has officially begun with the Inca Cup and started in June. However, since 78D urethane is difficult to handle and there is very little information available, I decided to film a video with helpful tips based on my own personal experience! And what about the Cearum 78D, which is scheduled for release around May??!! Thank you for always watching!