Jumbo short pile microfiber roller 4 Inches wide. 2 Pack of short pile 10mm thermo-fused jumbo roller refills, 4.5 Inches wide with a 30mm diameter core, ideal for semi rough surfaces. Microfiber is a very high absorbent fabric, giving it excellent paint pick-up; speeding up painting. Microfiber is ideal for applying thinner paints and treatments emulsions, primers, sealers, wood stains and varnish. The Thermo-fusion process bonds the fabric to the inner plastic core with heat, this ensures the fabric stays put. Compatible with all Paint Roller Handles, available on this web site.