Extend your reach. Hilti's S-NSD 5 in. impact socket extension is part of our line of impact sockets and offers long-lasting durability under the most stressful applications. Used for extending the reach of Hilti impact sockets, the S-NSD 5 in. impact socket features a 1/2 in. square drive anvil and a 1/2 in. square drive socket end which will connect to any impact socket with a 1/2 in. square drive anvil. Constructed of CrMo alloy steel for added strength, wear resistance and reliability. Perfect for use on corded or cordless impact drivers.