This is the MRS heavy duty leg kit #A-4192-0020 (125 mm). It is Ø60 mm × 350 mm long with one per kit.

Where heavier rack systems or longer styli configurations are used, such as multiple SCP80s or RCP TC-2s, the MRS system can be upgraded by using optional heavy-duty legs that are 60 mm (2.36 in) in diameter and 350 mm (13.78 in) long. These legs are mounted to the CMM table beneath the standard legs and feet.

NOTE: The MRS heavy-duty leg kit comprises one heavy-duty leg assembly. Two kits are required for each MRS install.