3/8x24

Trunk Lip Mount with Antennas using 3/8x24" base

3/8x24 Trunk Lip Mount with Swivel; 17' of coax to PL-259

3/8x24 Trunk Lip Mount with Swivel and Easy Off Knob; 17' of coax to PL-259

Trunk / Hatchback Lip Mount; 3/8"x24 Mount to PL-259 - 6.5' Cable

Heavy-Duty 3/8x24 Trunk Lip Mount with 16.5 Cable

3/8x24 Trunk Lip mount; 13.5' of Cable