... 1.Surface:rubber,ceramic lagging,diamond, 2.Type:drive,bend,head,tail,snub,take up,motorized Advantages 1) We can offer solutions ... are connected by the single key. And its single plate welding. The axle is unidirectional out.Medium duty:Bearing Aperture: 120 ... connected by the ring lock. The shell body is aluminothermic welding fabric. The axle can be unidirectional and two-way out ...