This vintage S-K socket extension is a great addition to any mechanic or collector's tool set. With its diamond logo and made in USA craftsmanship, it's a reliable tool that will last for years to come. The 5 inch extension fits 1/2 inch drive and is perfect for reaching those hard-to-reach bolts. Its brand and country of manufacture are SK and United States respectively, and it has not been modified. This collectible tool is a must-have for any tool enthusiast.