The Size With OD From 4mm To 100mm And WT From 0.3mm To 15mm Complying With The Standard Of GB, ISO, ASTM, JIS, DIN And EN. 2. Bearing Steel Tube Size: OD 5-100mm, WT 1-14mm Steel Grade: GCr15 (52100, SUJ2, SUJ3, 100Cr6, SKF3, SKF3S), 20CrNiMo ...Read More