These are not replacement grips they go over the original grips if your Switch is missing the rubber part they will not fit.

6 in 1 Silicon Thumb Grips Cap for Nintendo Switch Joy-Con Controller

Features:
Newest pattern, add comfort to game-play and keep fingers from slipping.
Compatible for NS Nintendo Switch Joy-Con controllers.
Color: Yellow
Material: silicon

Note:
Only the thumb grips, the controller is not included.

Included:
4 x Thumb Grips (high) 
2 x Thumb Grips (short) 

Compatible for Nintendo Switch Joy-cons
Protect the joystick grip against dust and dirt and enhance the game experience when playing
6 in 1/set,easy to apply and adds additional protection for your joystick
Material:high quality silicone rubber
2*tall caps 4*short caps