5. Turn the flexibility: single wheel rotates, the more the greater the effort, roller bearings can carry heavier loads, greater resistance to rotation: single wheel on the quality of the installation (bearing steel) Branch-foot ball bearing wheels, can carry Branch-foot heavy load wheel, turn the wheel lighter science along the foot, flexible and quiet. Casters Casters Casters presentation is referred to, including mobile and fixed casters. Caster also what we call the caster, its structure allows 360 degree rotation; fixed castors no rotating structure, can not rotate. Colson Casters | Caster | Custer Custer by Logistics Equipment Co., Ltd. Shenzhen. Shenzhen Custer Logistics Equipment Co. (www.szcaster.com) strong, credible, in Shenzhen, Guangdong electronics, electrical products and other manufacturing equipment industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement and innovative ideas will lead you hand into the brilliant Custer, a better future!