Handmade by skilled craftsmen, these popular brushes are now available in a variety of extra-large (or XL) sizes. The brushes in the Simply Simmons XL Natural Hog Bristle line were developed for use with oils, but can also be used on any surface with acrylics, gesso, and varnishes. - Simply Simmons XL Natural Bristle Brush - Round, Size 50Simply Simmons xl Bristle, ROUND SZ 50 -