According to the size and hook, the bondable edgewise brackets can be classfied as following: Bondable mesh base standard edgewise bracket 0.022"/0.018" without hook Bondable mesh base standard edgewise bracket 0.022"/0.018" with hook on 3# Bondable mesh base standard edgewise bracket 0.022"/0.018" with hook on 3#, 4#, 5# Bondable mesh base mini edgewise bracket 0.022"/0.018" without hook Bondable mesh base mini edgewise bracket 0.022"/0.018" with hook on 3# Bondable mesh base mini edgewise bracket 0.022"/0.018" with hook on 3#, 4#, 5#. 20pcs/set
