Technical data: Model: Single-sided Material: Plastic Cable clamps with a driven hardened "FLOP" nail for round and flat cables enable simple and quick installation of cables to building walls. Cable clamps with a FLOP nail are designed for attaching cables or individual cable cores to the surface using a nail. Attachment is done by driving a hardened nail into the surface. These types of clamps are used when quick and secure mounting is necessary, particularly in wooden or aerated concrete substrates. If the cable needs to be attached to a very hard substrate (e.g. concrete), it is recommended to use expansion bolts or other types of clamps. ** Illustrative photos.