The Big Green Egg 2 in (5 cm) Locking Caster Kit (set of 4) includes 2 locking and 2 non-locking casters; the casters work with the Big Green Egg Acacia Tables, Modular Nest Systems, the IntEGGrated Nest+Handler and all Big Green Egg Nests. This 2 in (5 cm) Locking Caster Kit works well with these great products: Hardwood Tables" AcaciaModular Nests