DIA: from 3.5mm~4.8mm (#6~#10) Length: from 15mm~150mm(5/8"~6") Material: C1022,ordinary material Description: Phillips bugle head, coarse thread, fine thread Surface treatment: black and grey phosphate, yellow and white zinc plated Packing: 25 kg/carton bulk packing , small box or packing made by order Pls contact me directly via the following ways: Email address:cindyselling85 at yahoo dot com Mobile Phone:+86-13260465309 Contact person:Cindy yin Hope I can serve you in the near future!