Compare with other styles, this antenna pipe clamp kit includes two claw hand screw nuts for easier and faster installation. The antenna pipe clamp kit is designed for mounting a round pipe (pole) to another round pipe (pole), accommodating pipe diameters from 1 to 1.8 inches. The antenna mast clamp uses jaw blocks with U-bolts (2-inch spacing, 5.5-inch length) for enhanced stability and to prevent slippage. This mast mounting clamp supports most WiFi, PCS, cellular, TV, ham radio antennas, flag posts, torches, fishing rods, patio umbrellas, and parasols. It allows adjustable mounting pipe length. The mast-to-mast mounting hardware is made from zinc-plated steel with an anti-rust coating. Size: 14 x 5.2 cm Material: Metal Color: Silver Package Contents: 3 sets of double antenna mast clamp V jaw blocks with U-bolts Note: Lighting conditions and display settings may cause slight color variation between the image and the actual product. Measurement tolerance is ±1–3 cm.