Rear binding post is drilled to have the clip cord position mounted on the top or side. Front binding post is drilled for a 8-32 contact screw. Front binding post dimensions: Height .625", Max diameter .3755". Rear binding post dimensions: Height .4995", Max Diameter .3765". Available in Blackened, Brass, Copper, Nickel and Nickel Black Made in the USA by Lucky Supply Mfg