Size(Qty.)/I.D. x O.D. x thickness(mm)
M6(120)/6.1×12.2×1.5 M8(80)/8.2×15.4×2 M10(50)/10.2×18.4×2.5 M12(30)/12.2×21.5×3 M14(20)/14.2×24.5×3.5 M16(20)/16.2×28×4 M18(10)/18.2×31×4.6 M20(8)/20.2×33.8×5.1