With adjustable, shockproof, wear properties, replacement for RV. Can be installed in right hand side of the driver's or 's seat, hounting size is 55mm/2.16in. Commonly used in cars, caravans, motorhomes, , boats, trucks, excavation machinery, engineering vehicles, etc. These comfortable armrest provides you with more comfortable driving, and they are rotary. Universal type, as no specific vehicle or seat fits, so an adapter board may be required and you may also need to drill mounting holes. Name:Seat Armrest Item Type:Car Seat Armrest Installed on the:Seat Right Hand Key Component Type:PU foam, ABS bracket, metal mounting bracket Adjustable Range:0-120° Position:Right hand side of the driver's or 's seat Arm Contact:Polyurethane integral foam Features:Adjustable, shockproof, wear Recommended Installation Height:The distance between the seat cushion and the bottom of the armrest is 11cm/4.33in (or 2cm/0.79in up down according to your needs) Fitment:Replacement for Fitment:For Motorhome How to Use: Installed on the right hand of the seat Install the configuration file: 1. Open the seat back cover. 2. Please sit in your seat and mark your most comfortable position. 3. Drill two holes in the mark you made. 4. Use screws to secure the armrest bracket to your seat. 5. Make a small hole in the sponge and pull the shaft out of the sponge. 6. As for the cover, repeat the previous step. 7. Secure the armrest to the part from the outside and fixed with screws. 8. Place it on the cover. Colour:Black Material:Plastic Package Contents: 1 * Car Seat Armrest 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.