Double finger () is applicable. Easy to grip, precise control, and reduced unnecessary friction. Height adjustable. screw rod adaptation. Tolerance test: Continuous exposure to sunlight for 6 months without cracking, with a service life of approximately 500 hours (data affected by finger skin roughness, grip strength, and control method). Item name: joystick/stick ends/rocker cap compatible models: (If you are not sure whether this product is suitable for your remote contol, please consult our customer service personnel before purchasing.) Installation method: 1. Unscrew the yuur joystick head. 2. Screw in the included positioning nut. 3. Screw in the joystick head. 4. Use the wrench to reverse tighten the rocker head and nut. Color: B:Green Material: PVC Package Contents: 1 x joystick cap 1 set x accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.