For certain applications, the drop-in cup holder is an excellent alternative to the surface mount models. It can be easily mounted onto any flat surface with an adequate depth clearance.

Universal Drop-In Cup Holder, ideal for Car and RV interiors, or for home and outdoors applications.  This cup holder has a 2.80" (71 mm) inner diameter and a 3.46" (88 mm) outer lip. Drops easily into any 2.90" (74 mm) hole cutout. Depth of cup holder interior is 2.76" (70 mm). Only available in black color, made from durable ABS