8 x Track Bottom Roller Undercarriage For Bobcat 325 331 #6815119, 7013575
OE#6814882 7013575 6815119 7013581 6693489 7019167. Side cover: QT 450-10, strength as follows: tensile strength ob (MPa): 2450 yield strength 00.2 (MPa): 2310 hardness: 160 ~ 210 hb. Roller : 45 # carbon steel or 40 Cr.