Frienda Backer Rod Foam Rubber Caulk Saver Concrete, Grey,1/8 Inch X 50 Ft Long Enough: you will receive 1 roll of backer rod 1/8 inch for door frame measuring about 1/8 inch x 50 feet, which can be easily trimmed to a suitable size with scissors (not included) according to your actual needs, enough length to meet your daily needs and replacement Quality Material: this gray rubber caulk rod is made of quality foam rubber material, safe to use, good flexibility, bendable, non absorbent, can be applied to fill spaces or seams; After the product is squeezed by the package, it can recover by itself after unpacking and standing for a while Use and Installation: you can use the foam rubber backer rod to fill the space; The support rod is soft and elastic, and just get the part you need and put it into the space, easy and simple to use Wide Application: the foam rubber backer rod is suitable for most types of collide, such as pavement collide, wall joints and foundations, and can provide a neat surface for caulking works Wide Range of Uses: you can also use foam backer rod to protect dog ears, make ring holders, complete craft projects, and more; The classic gray color can be matched with various style