The Arlington 4010AST Snap-2-It Connector is a zinc die-cast, straight MC cable connector designed for quick snap-in installation without the need for tools. It features a 3/8-inch trade size, fits a 1/2-inch knockout, and accommodates cord sizes from 0.405 to 0.612 inches. The insulated throat and red-tinted internal clip allow for easier conduit insertion, while the external spring steel clip ensures a secure fit. UL and CSA approved, this connector is concrete-tight when taped, making it a reliable choice for armored and flexible metal conduit installations.