The E-Z Red Headlock Dual Square Drive, No. 4S38L, provides technicians with a quick way to switch between a 3/8" square drive and 1/4" square drive flexhead ratchet. With 180-degree locking flex heads and a 12" long handle for impressive leverage this two-ratchets-in-one combination feature all of the benefits of a regular ratchet including a reversible switch and a precision knurled low profile thumb wheel. The tool comes with a limited lifetime warranty. US Patent No. D677,536.