The Carlon Masonry Conduit Clamps are a set of 14 clamps in sizes 3/4" and 1/2". These gray clamps are designed for use with masonry conduit, featuring a tap-in connection type and made of durable nylon material. They are resistant to chemicals, acids, and abrasion, providing a semi-flexible solution for securing conduit in various industrial and electrical applications. Manufactured in Israel, these conduit clamps offer a convenient and reliable way to attach conduit without the need for bolts or anchors. There is five 1/2 inch and 9 3/4 inch.