Yes and yes:

MPD Digital Genuine Times Microwave LMR-400 LM400 RF Coaxial Cable with N Male and RP-SMA Male Connectors

https://www.amazon.com/dp/B083JJCM8M/ref=cm_sw_r_cp_api_glt_i_TNKFAHBPZ4RV1ERDRMZQ?_encoding=UTF8&psc=1

MPD Digital Genuine Times Microwave LMR-400 LM400 RF Coaxial Cable with N Male and RP-SMA Male Connectors for Hotspot, WiFi, Radio Transmitters, Antenna, 30 Feet

https://www.amazon.com/dp/B083JJCM8M/ref=cm_sw_r_cp_api_glt_i_TNKFAHBPZ4RV1ERDRMZQ?_encoding=UTF8&psc=1

Amazon, but was told this is a solid place to get custom lengths in LMR400:

https://usacoax.com/custom.html

But here is the link for this cable:

MPD Digital Genuine Times Microwave LMR-400 LM400 RF Coaxial Cable with N Male and RP-SMA Male

https://www.amazon.com/dp/B083JJCM8M/ref=cm_sw_r_cp_api_glt_i_MK2W3P71MXFKF5N6XG01?_encoding=UTF8&psc=1