6 Inch x 48 Inch Mixed Rock and Frost Chain Assembly (continued) Ref. 1 1:1 1:1:1 2 3 4 5 6 7 8 Part Number Qty. Description 131-6253 1 Chain Repair Link ASM 131-6254 2 Notched Pin And Keeper ASM 131-6255 1 Pin-Keeper 131-1397 9 Cutter-Cup, RH 131-1398 8 Cutter-Cup, LH 131-1360 3 Holder-Bit, RH Center 131-1361 3 Holder-Bit, LH Center 131-1364 6 Holder-Bit, RH 131-1365 6 Holder-Bit, LH 131-1439 18 Bit-Carbide, Full Cab Ref. 9 10 11 12 13 14 15 16 3 Part Number Qty.