1" Diameter by about 1/4" thick wood plugs. We offer plugs in may different wood species. 1" wood plugs are used mostly for our handrail fittings and railbolts. Please contact us for custom sizes 1-866-683-2025 or email: firstname.lastname@example.org . Wood Plugs are sold unfinished and are manufactured by Kinzel Wood Products. Proudly Made in USA.