Fits our R10231, R10638 & R10639 Trimmer Heads5/16-18 Left hand nut
Replaces Echo 157410 Used on old style Tap-N-Go head with foam rings.
Nut for Stihl weed trimmers & brush cutters for mounting blades or heads. 10 mm x 1.0mm left hand threads
Fits our R10231, R10638 & R10639 Trimmer Heads
Reduces the wear & extend the life of the trimmer line.Also helps reduce line weld.
Replaces Lawn Boy 153066, 682069, Ryan/Ryobi 153066
Replaces Homelite A97910A, 308042003Fits Homelite EZ Line Advance Systems with left hand threads. (red)
Replaces Echo 215705, Shindaiwa 72005-92660, Stihl 0000 997 2300 Fits compact twist feed and heavy-duty twist feed trimmer heads
Fits Homelite EZ Line Advance Systems with right hand threads. (black)
Fits our R10231, R10638 & R10639 Trimmer HeadsOuter drive has 4 pins