Caulk Backer Rod, 20-Ft. x 1/2-In.
SKU: 8105611
1/2" x 20', Caulk Backer Rod, For Gaps & Joints, Non-Absorbant, Closed Cell Polyethylene, Pre-Caulking Material, Use Before Caulking To Fill Gaps & Openings Larger Than 1/2" x 1/2", Prevents 3 Point Bonding.
