TFL 1/4" Adjustable Stinger Strut, available in silver and titanium colors. The adjustable Strut makes fine-tuning the performance of any mono a snap. It's quickly adjusted from positive to negative thrust angles. Also unique to this strut is the barrel that holds the prop shaft, which screws in or out to adjust the length of the strut. This is useful in fine-tuning a mono or deep V. For 1/4" (6.35mm) prop shafts, strut length can be increased from approximately 110 to 125mm in length. See the picture. Specs Length adjustable from 110mm (4.33") to 125mm (4.92")Transom mount height: 58mm (2.28") Transom mount width: 47mm (1.85")Weight: 136.07 G (4.8Oz) Screws: M4 Requires: K&S pn# 8133 5/16" stuffing tube.