Check the listing for details. 1 PCS Advanced 40 PIN IC SOCKET ROUND HOLE 40 DIP-40 Closed Frame BLACK. Condition: New. Listed at 2.99 USD. Type DIP, 0.6" (15.24mm) Row Spacing Number of Positions or Pins (Grid) 40 (2 x 20) Pitch - Mating 0.100" (2.54mm) Contact Finish - Mating Tin Contact Finish Thickness - Mating - Mounting Type Through Hole Features Closed Frame Termination Solder Pitch - Post 0.100" (2.54mm) Operating Temperature -55°C ~ 125°C - The shipping service we offer is First-Class Package Service, which is a domestic mail service offered by USPS. It is designed for mailing lightweight packages that weigh up to 15.99 ounces and offers delivery in 1-5 business days. It includes a tracking number, allowing customers to track their packages. USPS prices start at $4.75, but we don't have any control over shipping prices. - Many customers ask if they can ship their products in a paper envelope. Unfortunately, we cannot do that because merchandise needs extra protection, and USPS does not provide a tracking number for this type of service.