Oak Half Newel Base Dimensions90 x 43 x 615mm UsagePart of our oak turned range. A newel base is a square timber detailed with a chamfered top which is pre-drilled to accept a 50mm spigot on the bottom of a newel turning. FinishOur oak stair parts come pre-sanded, unfinished. They can be finished by painting, waxing or varnishing.