Mutual Industries Closed Cell Foam Backer Rod 1/4" x 100 Feet, Caulk Filler Rope. Brand-new and works great, just bought too much for our project, so we're selling in 100' increments. Flat-rate shipping, and discounts if you buy more than 100', so buy as much as you need.

We also have 1/2" backer rod available. If you need 1/2", or some 1/4" and 1/2", you can buy a mixture of both from this listing and save with a quantity discount and combined shipping. We like to have both on hand, the 1/4" for smaller cracks and the 1/2" for larger ones.

Check out our eBay store for more great items.

Let us know if you have any questions, and thanks for looking!