Oak Ball Newel Cap Dimensions132 x 85 x 85mm, to fit a 90 x 90mm turned newel post UsagePart of our oak turned range. This stylish newel cap is designed to fit over a turned newel post providing a traditional finish. This cap matches our oak turned newels. FinishOur oak stair parts come pre-sanded, unfinished. They can be finished by painting, waxing or varnishing.