Features: 1. Made of ABS, the grid of the bottom is designed for reinforcement, stable enough, 2. Universal wheel design with lock catch to increases the mobility of flowerpots, saving your time and effort 3. The tray edge is curved to prevent the water from overflow and leak onto the floor. 4. Widely used indoors and outdoors to move garden flower pots, heavy plants, large potted trees, large vases, whiskey barrels or heavy trash cans to protect your floor from wear and tear. Specifications: Material: ABS Color: Red White Gray Five Sizes of 260 (outer diameter 26cm inner diameter 23cm, 3 wheels) 300 (outer diameter 30cm inner diameter 27cm, 4 wheels) 330 (outer diameter 33cm inner diameter 30cm, 4 wheels) 360 (outer diameter 36cm inner diameter 32cm, 4 wheels) 400 (40cm outside diameter and 36cm inside diameter, 4 wheels) 260# 300# 330# The height of the edge is about 1.5cm with wheels height 8cm 360# 400#The height of the edge is about 2.5cm, and the height of wheels is about 10cm Package Includes: 260# 1 Tray With 3 Wheels 300# 330#360# 400# 1 Tray With 4 Wheels