Bixpy Slide & Lock Fin Adapter (K‑1 & J‑2 Motors)If your paddleboard or kayak uses a Slide & Lock (Standard Fin Plate) system, the Bixpy Slide & Lock Fin Adapter is your fast track solutionmounts in minutes! Simply remove the fin and slide in this adapter to instantly accept a Bixpy K1 or J2 motor. The adapter is fully waterproof, corrosion resistant, and compatible with both salt and freshwater environments. Plug & play setupno additional tools required. Specifications Compatibility: Bixpy K1 or J2