Wing Tek Screws fix timber to steel. Wings are good at preventing wood scraps from blocking dill hole. It is normal that wings will break off when the drilling point drill through the steel.
Wing Tek-1
Wing Tek-2
Wing Tek-3
Wing Tek-4
Контакты
ADDRESS 10/F., Kwan Chart Tower, No. 6 Tonnochy Road, Wanchai, Hong Kong