Shock Absorber Inner Tubes A:Tolerance:0-0.02mm B: ... D:Planting hardness 15-20 mir Shock Absorber Inner TubesA:Smooth surfaceB:High precision sizeC:Rust prevention ... treatment:oiled shock absorber inner tubes1 OD: 5mm-120mmWall thickness: 0.5mm-20mmLength ... etc3Standards:GB,ISO,DIN,ASTM,JIS,IDF,BS,BSEN AND ETC4Application: widely used in automobiles, hydraulic cylinder, ...