Extension Spring

>Wire diameter: 20mm;
> Car Make: Trailers;
>Length: 400mm;
>Material: 55CrSiA spring steel;
>Load type: extension;
>form of ends: hook;
>Finish: spraying black;
>Equipment: CNC coil machines & fatigue tester & tensile tester;
>Usage: HONDA automobile shock absorber;
>Packing: plastic bags for inner and cartons for outer, or wooden case;
>MOQ: 100 pcs per item;