2. Generally speaking, the universal wheel, referring to the flat-bottomed universal wheel, the installation of the time to see the caster flat plate installation size (four holes in the distance), and then the equipment on the flat plate to open the hole, and then install the screw, fixed with a nut can be
3. Universal wheel, in fact, is a kind of casters that we come into contact with in our daily lives. Casters according to the rotating system, divided into directional wheel and universal wheel, usually they are used in conjunction. Directional wheel is the wheel mounted on the cart fixed bracket, the so-called fixed bracket, is relative to the direction of the cart is fixed, often used to limit the direction of movement of the cart, so that the cart along the straight line direction of movement, a lot of luggage, fishing rods on the use of this kind of casters.