Morris stocks Spiral Pipe Bumper Rings. There are three sizes 2.375" - 3.5" (Small - Pipe OD), 4.5" - 5.5" (Medium- Pipe OD), 7.0" - 9.62" (Large - Pipe OD). They are made of molded Polyethylene/ EVA. Bumper rings are used to protect any pipe that may be coated or easily damaged and cannot have any "metal to metal" contact during shipping. Please contact sales for pricing.