Low profile caps give a sleek finish to your installation and are ideal for white boards, transaction tops and other installations where a standard cap would be too large. Other studs available for separate purchase.1-1/4" Diameter low-profile standoff cap made from clear anodized aluminum. Standoff Cap, 5/16"-18 Thrd Sz, Aluminum Clear Anodized Note: Stem is 1/4" long and requires a 9/16" hole in your material.