Foam Backer Rod for Gaps Concrete Crack Filler Joints Foam Gap Filler Caulk Saver Backing Rod Filler Rope Concrete Joint Filler (1 Inch X 10 Feet)

Customers find the backer rod works perfectly for filling concrete gaps and appreciate its durability, with one mentioning it made it through a winter without issues. The product receives positive feedback for its quality, ease of application, and value for money.