... 4.Finsh:Black/grey phosphating,Z/P Black phosphating coarse thread drywall screws Products Details: Products Name: Drywall Screw Size: ... of the head Product size: Pictures show: 1. Fine thread 2. Coarse thread 3. Drilling point 4. Bugle head 5. Phillips ... our sales department . WENZHOU HOWLS FOREIGN TRADE CO.,LTDRm.1106,Digital Mansion,No.140,Xincheng Road,Wenzhou,Zhejiang,ChinaCompany Website URL ...