Paint Roller Cover Cover Type Standard Surface Texture Smooth Compatible Roller Frame Style Yoke 18 in Overall Length 1/4 in Nap Size Surface Material Concrete Paint Type Oil Based Paints Water Based Paints Core Diameter 1 1/2 in Cover Material Shed-Resistant Fabric Core Material Polypropylene For Use With 8614 BR412-21 BR045-18 BR047-18 BR036-18 Includes (2) End Caps