Adjustable professional expander - strength training (full body training) training locations: - gym - physiotherapy / rehabilitation practices (eliminate symptoms / imbalances & asymmetries) - home training - traveling - outdoor training With this expander you can take your training to a higher level. You have the opportunity to push your upper body to the limit with all exercises. So that you can do this, you have the choice of using 5 steel springs with this expander.You come to 30kg resistance when all springs are engaged. Depending on the muscle group, this is too much resistance and you then reduce it to e.g. 2-3 springs. The springs can be easily put in and taken out again. Details: - For an intensive upper body workout - easy to store away - easy to transport - the opportunity to train anywhere - no wear out. (Reminder: 1. Due to different shooting environments, there may be slight errors. Please refer to the actual item received. 2. Due to manual measurement: There may be a little difference in size, please understand)