Quality Material: This black backer rod is made of EPDM rubber material, high flexibility. Strong drainage ability and lightweight, which is longer life than other plastic and foam materials Suitable for Most Cracks: The gap filler is suitable for most kinds of cracks, such as pavement cracks, wall joints and foundations, which can provide a neat surface for caulking projects. Black is a classic color, resistant to dirt Long Enough: You will receive caulk strip about 16.4 ft. It’s enough for you to cut the right size with scissors according to your actual needs Versatile to Use: The black space filler is versatile and can be applied for gap, door and window gap filler, pavement joints, protection for pet’s ear, make ring holders, etc. Just use it to do what you want to do Easy to Use: When you have desired part to padding, you can put the backing rod into the space, press it well and cover and smooth with caulk Appropriate Size: There are 5 different sizes available, which are 1", 1/2", 1/4", 3/8", 5/8" inches width, you can choose the right style according to your actual need The ultimate solution for all your caulking and concrete filling needs,saving caulk and improving work efficiency.

Made from EPDM rubber material which is high density and non-absorbent water properties make it for various applications, like fill driveway cracks, seal joints and expansion joints.

The strip is suitable for most kinds of cracks, such as pavement cracks, wall joints and foundations, which can provide a neat surface for caulking projects. Black is a classic color, resistant to dirt.

Foam backer rod is good flexibility and bendable,flexible design allows for smooth application and a secure seal, ensuring a professional finish every time.

Provide foam caulk saver various size to meed your need.The backer rod is easy to install. When you have desired part to padding, you can put the backing rod into the space, press concrete crack filler well and cover and smooth with caulk, for your caulking and concrete filling needs.