With the innovative Camper Leveler, you can level your RV or trailer on the first try, every single time. No more guesswork. No more hassle. Simply drive up until you are level and then chock. It's that simple. The Andersen Camper Leveler provides dead-on leveling at any increment from 1/2" to 4". No other leveler is this precise or this easy to use. Each kit includes 1 leveler and 1 chock. One leveler per axle is recommended.• Built tough and built to last• Level your trailer on the first try• Precise leveling at any increment between 1/2" and 4"• Lifts up to 4"• Works great on trailers up to 30, 000 lbs. and with tires up to 32" diameter Lifts up to 4"" Works great on trailers up to 30, 000 lbs. & with tires up to 32"" diameter Includes 1 leveler & 1 chock | Andersen Camper Leveler in Red