Tumbler sandbag Sanda Taekwondo vertical suction cup

Fill 2 / 3 sand and then add water. You can't beat it downWarm reminder: don't be too satisfied with the sand / water, so as to prevent the water exceeding the storage limit from overflowing from the fixing screw during exercise! Sand loading: it can be filled according to its own strength; Water filling: 4 ~ 5cm lower than the water inlet cover。The correct way to double stabilize the 12 strong suction cups and move the sandbag is to insert a thin piece into the edge of the suction cup and lift it row by row, and then put cardboard in it to make all the suction cups leak. If the suction cup and the barrel are picked up at the same time, the suction cup will not break.