5/16" Maple Button Top Wood Plugs fit 5/16" holes. 5/16" Maple Button Top Wood Plugs are Wood Plugs with "Mushroom Top" and are sometimes referred to as "chair plugs or chair buttons", although they are often used on chairs they are also common on table legs, cabinets and other woodworking projects. 5/16" Maple Wood Buttons have mushroom shape and are end grain. Gently tap in with a rubber mallet or similar tool. Bulk available.