For Use With: Rubber Cut 414 Regroover. Part Number: REMA R-2. Cutting Width: 5-6 mm. Cutting Depth: Max of 8 mm. Haltec 8807N-4 Large Bore Tire Valve Adapter to Standard Bore OTR Truck Farm. Haltec 5 8807N-4 Large Bore Tire Valve Adapters to Standard Bore OTR Truck Farm.