The Double Bladed Slicker is shaped to provide knuckle clearance. The formed slicker is made from the highest grade of carbon steel. Use this jointer to create a smooth flush mortar joint in brick or block.This joint prohibits moisture from entering the joint, making it ideal for exteriors. A slicker is also a popular tool for tuckpointing, especially in tight spaces. Each end makes a different size joint for versatility. One end makes a 1/4" joint, then flip it around for a 3/8" joint. Overall length is 11" with each blade measuring approximately 3-3/4". Proudly made in the USA.