磁性包皮,带滚珠轴承和乒乓球
3,241 63%
20 minutes. First table tennis ball, then fifteen ball bearings inserted. Used a large magnet to see if it would attract the bearings inside, which it did.
5 年 前
3,241 63%
20 minutes. First table tennis ball, then fifteen ball bearings inserted. Used a large magnet to see if it would attract the bearings inside, which it did.