BU 500-5-A BACKUP TOOL ASSEMBLY (HD WIDE JAW)
BU 500-6-A BACKUP TOOL ASSEMBLY (HD WIDE JAW)
BU 500-A BACKUP TOOL ASSEMBLY
BU 500-AR REBUILT BACKUP TOOL ASSY
BU 501 JAW (1 5/16 - 2 1/16)
BU 503 JAW (3 1/16 - 4 1/2)
BU 503-100 BACKUP JAW W/INSERT/SCREW
BU 504 JAW (4 1/2 - 5 9/16)
BU 505 JAW (5 - 6 1/16)
BU 507-1 GEARED RING - WIDE JAW
BU 508-1 SPACER FOR TOP CAP
BU 508-4 TOP CAP FOR BU 500-4
BU 508-4-A BOTTOM CAP W/PIN (BU 500-4)
BU 508-R PLATE TOP (BOTTOM) REBUILT
BU 510-1 SWIVEL FOR BU 500-1-A
BU 510-2 SWIVEL FOR BU 500-2-A
BU 510-4 SWIVEL FOR BU 500-4-A
BU 510-5 SWIVEL BLOCK FOR 74
BU 511 SWIVEL PIN (ALL BACKUPS)
BU 512 HOUSING HEAD ONLY
BU 512-1-A HOUSING ASSY W/PIN & HANDLE
BU 512-4-A HOUSING ASSY W/PIN & HANDLE
BU 512-R REBUILT HOUSING ASSY (WHEN AVAILABLE)
BU 513-1 RETURN SPRING HOUSING
