RAM-D-247U-4 RAM Square Post Clamp Base for Posts up to 4"...

RAM Mount Round Plate Short Arm Mount on 4" Clamp Base RAM-101U-B-247-4

RAM-B-247U-3 RAM Square Post Clamp Base for Posts up to 3"...

RAM Square Post Clamp Base for Posts up to

RAM Square Post 1.5" Ball Short Mount with Round Base - For Posts up to 4" Wide

RAM-B-247U-2 RAM Square Post Clamp Base for Posts up to 2"...

RAM-D-247U-3 RAM Mounts Square Post Clamp Base for Posts up to 3" Wide - D Size

RAM-247U-25 RAM Square Post Clamp Base for Posts up to 2.5”