Oricom UHF310PNP Plug and Play 5 Watt UHF CB Radio Pack Marine Subwoofers 5/16 inch is the standard

5/16 inch is the standard inner ring diameter for car audio distribution blocks

Mechanical Specifications External Speaker3

Mitsubishi Challenger 2013–2015 (PC)

Port length 10" subwoofer: 10

Oricom UHF310PNP Plug and Play 5 Watt UHF CB Radio Pack Marine Subwoofers 5/16 inch is the standardOricom Plug and Play 5 Watt UHF CB Radio Pack: This Ultra Compact Micro UHF CB Radio Pack Is The Perfect Portable Communication Kit Including everything you need for communications on the go, the UHF310 includes a flip LCD function for the ideal mounting position. Pack includes UHF310 radio, antenna, car charger and suction mounting bracket. Oricom UHF310PNP Features: 5 Watt (max TX power) 80 Channels Ultra compact micro size 7 colour backlit display