Used For Dental orthodontic treatment. 0.014x0.025 upper, 0.014x0.025 lower. 0.016x0.016 upper, 0.016x0.016 lower. 0.016x0.022 upper, 0.016x0.022 lower. 0.016x0.025 upper, 0.016x0.025 lower.
0.017x0.022 upper, 0.017x0.022 lower. 0.017x0.025 upper, 0.017x0.025 lower.
0.018x0.018 upper, 0.018x0.018 lower. 0.018x0.022 upper, 0.018x0.022 lower. 0.018x0.025 upper, 0.018x0.025 lower. 0.019x0.025 upper, 0.019x0.025 lower.
0.020x0.020 upper, 0.020x0.020 lower. 0.021x0.025 upper, 0.021x0.025 lower. One pack just include one size, not mixed pack.