Dust cover specifications of guide rail:,C3,C4,C5,C6 Whether the end distance from E1 needs to be connected: No, yes; Whether the end distance E2 needs to be connected: no, yes; Accuracy: C,H; Guide fixing mode: R,U; End distance E1: [0.0-80.0]; End distance equal: no, yes; End distance E2: [0.0-80.0]; Guide length: [60-4000]; Guide rail positioning hole distance: 60,80; The fixed bolt size of the guide rail:, the fixed bolt size of the guide rail is M3, the fixed bolt size of the guide rail is M4; Dimensions: 15,20,25,30,35; Model: EG;