These rust-proof metal Hold-down Pegs are designed to secure the Radon Emanation (Exhalation) Monitor when used for outdoor site characterization. Sold in packs of 3. Sturdy galvanized 14 gauge steel; each peg is 22.9 cm (9") long x 1.3 cm (1/2") wide and features a 3.8 cm (1.5") long grip.