Diameter: m3.5, m3.9, m4.2, m4.8 Length: 1/2''-10'' Material: c1022 Finish: black/grey phosphate, yellow zinc plated, blue zinc plated Packing specification: 1. Bulk 2. Commodity packing 3. Shipping packing: 25kg/ctn, etc. 3. According to the customers' request. Packing specification: 1. Bulk 2. Commodity packing 3. Shipping packing: 25kg/ctn, etc. 3. According to the customers' request.