Swivel Rebuild Kit for High Pressure Swivel Adapter This 12-Inch digging chain fits

This 12-Inch digging chain fits all 12-inch Ground Hog T-4 Trenchers

The adapter goes onto the HD99 (H723) Hydraulic Motor and changes it to the standard 7/8" Square to accept SD

The Ground Hog T-4 uses an innovative ratchet mechanism on the wheels to help prevent the machine from pulling away from the trenching direction

Replacement blade for the SD8 8-inch

Swivel Rebuild Kit for High Pressure Swivel Adapter This 12-Inch digging chain fitsPart Number: H750 Swivel Rebuild Kit for HD99 High Pressure Swivel (H746) This Kit includes O rings, Teflon backup Rings, and a New Snap Ring to rebuild leaking High Pressure Swivels (H746) on the HD99 Auger. Kit Includes: (2) H746 1 Teflon Backup Ring (3) H746 2 O Ring (2) H746 3 Quad Ring (Flat O ring) (1) H746 4 Snap Ring