According to their different uses caster price, bearing sub core, aluminum, plastic core caster various colors and sizes ranging from 1 inch to 8 inches. Wherein the core, aluminum is generally heavy load-bearing wheels, often with the use of the brake apparatus. Caster refers bracket in caster wheels can be moving or static load in the load level of 360 degree rotation. Casters manufacturers specified design position must be installed. Caster bracket must have sufficient strength to meet weight bearing use. Positive Tong Machinery (FIG), caster manufacturer, Yellowstone County is caster supplied by Ning Tong Machinery Plastic Co., Ltd. Ning County is Tong Machinery Plastic Co., Ltd. (www.dzztjx.com) adhere to the "people-oriented" business philosophy, with a professional staff, and strive to provide the best products and services to contribute to society, and to welcome new and old customers to visit patrons, sincere cooperation for a better future. N Tong Machinery - your trusted friend Address: Galaxy Ningjin County Economic Development Zone, Contact: Qu manager.