About this item 7-section telescopic antenna, made of stainless steel; Antenna length: 15 cm - 74 cm (5.9 - 29 inches); Mounting hole diameter: 2.5 mm/ 0.1 inches; Easy to install; Suitable for damage Large Antenna Replacement Parts for Your TV and FM Radio Receive Antenna; Compatible with Indoor Portable Radios, FM Radio, Home Stereo Receivers, AV Audio Video Home Theater Receivers, TV Converter Boxes, TV Tuner Receivers; Compatible with home and office GSM alarm system, wireless security sensor motion detector alarm, remote control toy model, frequency meter counter; Package list: 2 telescopic antennas; (as shown in the picture) 7-section telescopic antenna, made of Made of stainless steel; Antenna length: 15cm - 74cm (5.9 - 29in); Mounting hole diameter: 2.5mm/ 0.1in; Easy to install; Large antenna replacement parts for damaged TV and FM radio receiving antennas ; Compatible with Indoor Portable Radio, FM Radio, Home Stereo Receiver, AV Audio Video Home Theater Receiver, TV Converter Box, TV Tuner Receiver; Compatible with Home and Office GSM Alarm System, Wireless Security Sensor Motion Detector alarm, remote control toy model, frequency meter counter; Package list: 2 telescopic antennas; (as shown in the picture)