5 pack, 3/8", flx/bx saddle connector, indoors only, in a dry location, used to connect flexible metallic conduit, ac, mc & non-metallic sheathed cable to a steel outlet box or other metal enclosure, 3/8" size fits 1/2" knock out , suitable for: #14-2 to the largest size fit table non-metallic sheathed cable, #14-2 with ground steel & aluminum armored cable, 470" diameter, 3/8" steel flexible metal conduit, aluminum continuous corrugated metal clad cable 0.510-0.620"diameter, aluminum smooth sheath metal clad cable 0.410-0.500" diameter, aluminum interlocked metal clad cable 0.462-0548" diameter, steel interlocked metal clad cable 0.422-0552" diameter.