Solder Feeder Attachment (640-2064) Features Faxback Doc. # 32015 Easy one-hand soldering! Feeds solder as you need it - just push a lever. Mounts on most pencil-type soldering irons and accepts solder from 0.02" to 0.07" in. diameter. Your Radio Shack Solder Feeder Attachment lets you hold solder and a soldering iron in one hand. With the Solder Feeder mounted on a pencil type soldering iron such as Radio Shack Cat. No. 64-2051, 64-2055, 64-2071 or 64-2105 (not supplied) you have a hand free for other tasks. Easily position and steady items while you solder them. Your Solder Feeder Attachment comes with two sizes of detachable soldering iron holders, which allows use with large or small pencil-type soldering irons. (EB 4/17/96) (LB 3/27/96)