【Product Type】: This set includes two heavy duty Board Dollies, great for transporting door panels with ease. The dollies are equipped with 360°rotation wheel with brake for smooth and efficient movement. 【Material】: Made from quality steel, these door installation dollies are designed to withstand heavy loads, ensuring durability and long lasting use. 【Product Size】: Each measures 16cm, a compact size that allows for easy storage when not in use but still provides support for door panels. 【Suitable for】 : Door Installation Kits, Heavy Duty Door works with1-3/4" and 2-1/4" Pre Hung, Slab, and Front Doors, etc. Can withstand 250kg. 【Versatile Use】: Door installation tools are Ideal for both professional and personal use, these dollies can be used in construction sites, warehouses or even at home for moving heavy objects effortlessly. Specification: Material: Steel Size Chart: 16cm/6.30inch Suitable for door panel thickness 3.5cm-5.6cm/1.38inch-2.20inch Load capacity 250kg Package Includes: 2 Door Installation Dollies Note: Please allow slightly errors 1-2cm differences due to manual measurement.