made of stainless steel features two holes 3/8", used for fixing cable to tower. Item : standard angle adapterMaterial : stainless steelDescription : (1) angle adapter with three 3/8" tapped holes " , (1) square head bolt , 3/8"X 1 3/4" , (1) slotted hex head bolt , 3/8"X 3/4" , (1) lock washerPacking : 10pcs/kit , 10kits/carton standard angle adapter