This singletree clevis & pate assembly is often used on lighter carts, pony and light horse buggy shafts, and light horse doubletrees. The caster and yoke are all one assembly. The bottom of the “E” is where the doubletree evener and/or the cart crossbar fit and the upper section of the “E” is where the singletree fits. There are upper and lower wear plates that fasten to the singletree. The bolt in this assembly is 5/16”.