Crescent’s full line of squares is ideal for the professional tradesmen who get the job done at all costs, with longevity and an investment in their craft. Equipped to perform in a variety of environments, Crescent squares allow you to easily complete multiple tasks. And with advanced design features that provide durability and maximum functionality, Crescent squares outlast the elements. In grit, dust or tough territory – there’s a square for your unique application.6 in fold out extension arm eliminates the need for a 7 in and 12 in squareQuick access thumb lock releases the fold out extension and locks it back into place after useSolid aluminum construction and corrosion resistant finish for durabilityLaser-etched markings for visibility and durabilityLightweight and easy to store in your work pouch or pocket