45 mm Extension 65721 Corrosion resistant for long life Durable chrome-plated finish Knurled handle for enhanced grip Since 1857, Klein Tools has manufactured the world's finest hand tools Male Square 3/8'' Drive Buy Now Find Retailer Product Media Specifications Warnings Related Items Videos Downloads Brochure Images High-Res JPG 65721_photo.jpg PNG 65721.png The Klein 65721 1 3/4” extension is designed with a socket size of 3/8”. This extension is very desirable for hard-to-reach areas. It is forged from the highest quality alloy steel. Specifications Socket Size: 3/8'' Weight: 1.4 oz (40 g) UPC: 092644657214 Additional Information Warranty Compliance Warnings Always wear approved eye protection. Related Items 65720 178 mm Ratchet, 3/8'' Drive 65722 3'' extension 65723 152 Extension, 3/8'' Socket Size 65724 5/8'' Spark Plug Socket, 3/8'' Drive 65820 245 mm Ratchet, 1/2'' Drive 65821 127 mm Extension, 1/2'' Drive 65823 5/8'' Spark Plug Socket, 1/2'' Drive 65620 121 mm Ratchet, 1/4'' Drive 65621 Spinner Handle 65622 51 mm Extension with 1/4'' Socket Size