Stainless steel screw nails, 1.83mm wire diameter for excellent durability and strength. - Brand: DUO-FAST - Material: SUS 304 - Wire Diameter: 1.83mm - Size: S 30 SDP - Quantity: 150 nails x 10 coils x 5 boxes Thank you for viewing. The items are basically unopened, but one box has been opened for product photography. These were found in the workshop of my family's construction business, which closed down a while ago. I'm not sure if they are still usable, but I'm offering them for sale in case someone can use them. Please confirm the model number, etc., before purchasing. Thank you.