it is used in handcarts and some storage racks , its direction is universal , and it can be intubated and braked . DESCRIPTION : These casters can be used with pipes directly. Features: 1 Using with small of light weight applications; 2 Antistatical casters available 3 There are different casters for different needs. Fitting the caster Insert the caster into the pipe and turn the socket cap bolt to tighten the insert. TIPS : 1 Structure mountd on caster should be reinforced using floor level support pipe . Failure to install these pipes leaves the whole structure including casters.Vulnerable to impact. 2 One must install floor level support pipes no higher 200 mm above the floor on every application mounted on casters to ensure rigidity in the even of impact. And there are casters in our factory : 1 (3' 4' 5' swivel caster can be intubated) 2 (3' 4' 5' swivel caster with brake can be intubated) 3 (3' 4' 5' rigid top plate cast) 4 (3' 4' 5' swivel caster with top plate) 5 (3' 4' 5' swivel caster with brake with top plate)