Armstrong A+ System Upgrade Kit Size_XXXX-Large It really does have to

It really does have to be Mineral Glass

z-index: 1

To fill the gap between the front tab of the original (dual tab) FCS fin and the front of the FCS II plug front slot

Helps maintain speed and control through turns

Armstrong A+ System Upgrade Kit Size_XXXX-Large It really does have toPackage Includes: (2x) Torx M6 25mm 316L Stainless Steel Countersunk Screw (with pilot hole) (1x) 3. 5mm Drill Bit (1x) 6. 5mm Drill Bit (1x) 8. 5mm Drill Bit (1x) Countersunk Grinding Head (2x) 0. 5* Polycarbonate Pro Shim (Blue) (2x) 1* Polycarbonate Pro Shim (Red) (2x) Torx M6 28. 5mm 316L Stainless Steel Countersunk Screw (Rainbow Titanium Coating) (2x) Torx M6 8mm Titanium Barrel Nut (1x) Mast Jig Guide (1x) File