Package included: 4PCS Stick protector and 18 PCS rubber cap (4 black, 4 red, 2 white, 2 blue, 2 green and 2 transparent) Note: If the rubber cap longer than your switch, you can trim it to a proper length by scissors. Features: The anti-slipping rubber cap can be put on the switch of the transmitter to prevent slipping and reduce the pressure on your finger when you toggle the switch. To make the remote control more comfortable. The stick protector can be used to protect the stick of your RC transmitter during transport. The size of the center hole is proper to hold the stick without loosening. they are suitable for most brand transmitters like Jumper T16 T18, FrSky Taranis X9D Plus Q X7 X-Lite Horus X12S Flysky FS-i6, FSi6X Spektrum DX6e DX8 Futaba and Radiolink, Futaba, etc.