Sellars Blue Shop Towels help hide grease and grime better than white shop towels allowing for more use before being discarded. Use as a refill for the Blue Shop Towel Big Grip Bucket or as a stand-alone center-pull blue shop towel dispenser. Center-pull towels are wrapped in a water resistant plastic container with a cardboard dispensing disk that allows for single sheet dispensing and also provides support for the container so that it will not collapse even when down to the last few sheets. 200 Ct Shop Towel Refill.