Package Include: 2 x wheels with brake(back); 2 x wheels without brake(front). 4sets in total.
Size Information: wheels, 2.4inches in diameter, 1.6inches wide.
Easy to move: Specially designed for REPTI ZOO, it is more convenient to move the tank.
Easy Installation: No need screws to fix, just install the wheels correctly to the four corners of the tank. Then you can push the terrarium to move,quiet scrolling and protect your hardwood floors from any scratching or extra pressure.
High Quality: This caster wheels are made of high quality nylong and metal, sturdy and resistant that have a strength capacity of up to 220lbs, good for 3 stackable RK terrariums.