M2 Length: 15mm! Model parts: Pan head machine screws Set of 8. M2x15mm, pitch 0.4mm (SW washer, washer, nut) Pitch: 0.4 Unknown manufacturer (YHT?) Stored in a home drawer for over 20 years. Although the package has been opened, they are unused. Package damage and age-related deterioration from storage. For fixing long items... (For fixing weights and bodies...) Considering the above, the item condition is rated as "Slightly scratched or dirty." Everything in the photos is included. Please examine the photos carefully. For those who understand the current condition of such items, and for those who need them... Please refrain from purchasing if you are looking for a perfect item or are overly concerned about condition. No returns! *Shipping costs are included in this price. Thank you for your understanding.