*The unique shape of the tool radius leaves a smooth superior finished seam. *Pivoting motion of the tool does not mar the joint. *The smooth finish reduces porous weak spots and works well on fast drying mortar. *The rounded corners prevent pocket tears. *Reduces wrist and arm fatigue which improves the quality of work and saves time. *Overall length 9.25 inches. *One jointer, two sizes, each end makes a different size joint. *Our jointers are heavy duty, ultra-hard,heat treated and zinc plated finish.