Stanley Proto Industrial Tools now offers nine additional interchangeable head torque wrenches and 125 head attachments. The wrenches consist of three electronic, two micrometer, and four preset versions, in ¼-, 3/8-, and ½-inch drives, with torque values from 25 in-lbs to 250 ft-lbs. The attachments include ratcheting, open-end, and box heads, in metric and inch sizes. An easy to understand part-numbering system matches the correct torque wrench to the attachment. The interchangeable head system addresses the fact that mechanical assemblies are becoming tighter and more compact. The wrenches allow users to remove the ratchet head and replace it with an open end or box head, whose narrower profile can fit into tighter spaces. The wrenches also keep workers productive by letting them change heads without having to recalculate torque values. That’s because the box and open-end attachments have the same center-to-center distance as the ratchet heads that fit on the same wrench. Each attachment is also marked with a recommended maximum torque value to prevent overtorquing of fasteners. For more information visit www.stanleyproto.com or call (800) 800-TOOL.