The 1/4 inch Black Polyethylene Clip On Coaxial Masonry Staples feature UV resistant polyethylene saddles that are suitable for indoor and outdoor applications. These staples are ideal for securing RG59 and RG6 coaxial cables into cement block and masonry and include hardened nails that can penetrate cement block, mortar or plaster surfaces. Hardened nails can penetrate cement block, mortar and plaster surfacesFor use with RG-59 and RG-6 coaxial cableClip-on feature easily snaps cable in place for easy installationPlastic saddle resists UV rays and corrosionUV BlackSecure RG-6 and RG-59 cable in cement, mortar and plaster with Gardner Bender 1/4" Black Plastic Coaxial Cable Staples for Masonry Surfaces). These staples resists UV and corrosion damage.