MW433 and MW868 are 1/4 wave whip antennas for 433MHz and 868 MHz respectively. They are housed in a flexible moulded sheath and have a SMA-Male connector. The MH433 is a 1/4 wave helical antenna for 433MHz. Once again it has a flexible moulded sheath and SMA-Male connectors. Alternative connectors are possible as are other frequencies.