The bottom 13 and the lower end of the support 3 are fixedly connected by an anchor bolt 18 and a nut 7 or the upper end of the support 2 coupled to the knitting machine 1 and the lower end of the support 3 Or the upper end of the knitting machine 1 and the lower end of the support 3 are fixedly coupled to each other by a pin 5 or a bolt 6 and a nut 7 or other device such as a ring or a bearing, The apparatus is fixedly held by using an anchor 10 or a lock bar 19 connected to the string 9 of the pulley 11 or the pulley 8 so that various devices such as a swing or a bar can be connected to the apparatus, It allows the athlete to see more fun, safe and efficient play and exercise effects, and increase their familiarity with water.
展开▼
