The 93812 Astro Pneumatic Nano Ratchet 3/8'' Drive Head in 1/4'' Ratchet Body Long is a 3/8'' drive ratchet in a 1/4'' ratchet size format. The Nano 3/8'' head is 50% the size of the most popular 3/8'' competition and the same size as the 1/4'' drive. 72 tooth, 12'' long, quick-release socket retention, solid teardrop handle, and a full chrome polish finish. The 3812 Astro Pneumatic Nano Ratchet 3/8'' Drive Head in 1/4'' Ratchet Body Long exceeds ASME torque standards for 3/8'' drive tools despite its miniature size.