The RAM-D-246U-IN1 consists of a 2.25" rubber ball, connected to a 4.75" square plate with 4x100mm holes and 4x75mm holes in each corner.
Mfr. Part#: RAM-D-201U-C
$38.00
Mfr. Part#: RAM-D-201U-C-MI1
$43.00
Mfr. Part#: RAM-D-201U
$58.00
Mfr. Part#: RAM-D-201-SU
$63.00
Mfr. Part#: RAM-D-201U-MI1
$64.00