Locking Caster KitThe NEW Big Green Egg 4 inch (10 cm) Locking Caster Kit features all black, low profile components to integrate with the Big Green Egg design scheme. Each kit includes 1 locking and 1 non locking caster; the casters work with the Big Green Egg Modular Nest System, the IntEGGrated Nest+Handler and all Big Green Egg Nests and Tables. Heavy duty for better wear through high use conditions 2 way brake locks both roll and rotation Solid polyurethane wheel