K5115 wood balusters have a 1-1/4" square base and 1-1/4" square top. 34" & 36" & 39" Balusters are used on open stringer applications. 42" Balusters are used for volutes and turnouts. Balusters are sold unfinished and manufactured by Kinzel Wood Products. Proudly Made in USA. Please contact us about custom sizes 1-866-683-2025.