Snap On Tools USA AB3044 3/8″ Drive 4″ Long 1/4″ Hex-to-3/8″ Square Adapter is a high-quality, single item hand tool specifically designed for automotive use. Made in the United States, this adapter features a standard socket type and specialty system of measurement suitable for both SAE and metric measurements. The 3/8″ drive size and 1/4″ hex-to-3/8″ square adapter size make it a versatile and essential tool for any mechanic or automotive technician. With the trusted Snap-on brand and durable construction, this adapter ensures accurate and reliable performance on the job. New item may show cosmetic blemishes from being on actual tool truck