Each stirrup has a base of laminated oak by Nettles, is fully wrapped in monel (stainless steel) or brass, and finally it is polished to a high shine. The Moran has curved sides and a flat bottom. The curve of the Moran begins closer to the top of the stirrup than does the Bell Bottom. The Moran has a foot to bolt measurement of 5 3/4” and an inside width of 5 3/8”. They are available to order in 2″, 3″, 4″, or 5″.