1.Micro needle RF handle, used for invasive treatment, such as acne removal,wrinkle removal,stretch marks removal and so on.  Two different tips for this handle :one has 25pins which is used for facial treatment;the other has 49pins which is used for body treatment. 2.Fractional RF handle ,which is mainly used for facial lifting and skin tightening an so on.  3. the cooling head is used for ice mask. 4.the last one is the negative bar.