DIA: #3-#12 HEAD TYPE: pan head phillip,flat head phillip , hex washer head... Material: SUS*M7¡¢302HQ¡¢303CU¡¢303F¡¢304¡¢304CU¡¢304HC¡¢304J3¡¢304L¡¢304M¡¢305J1¡¢316 ¡¢316C¡¢316CU¡¢316L¡¢410¡¢420¡¢430¡Â¡ Salt spray testing for all our products more than 72hours the longest can reach up to 2000hours. Best regards leon ========================================= Qiang Xin Hardware Products Co.,Ltd ADD:No25 Wanchang Rd, Dongsheng Industry Zone, Dongsheng Town , Zhong shan city , Guangdong Province, China Tel : +86-760-22826212 Fax : +86-760-22826512 Mobile : +86-13286919535 Website : www.qx-screws.com E-Mail : qxleon@live.cn MSN : qxleon@live.cn SKYPE : qxleon