Attributes . Serve as pulling fittings; Make bends in conduit system; Provide openings for splicing; Connect and change direction of conduit runs; Allow connections for branch runs; Permit access to conductors for maintenance; Smooth, rounded integral bushings in hubs protect conductor insulation; Accurately tapped, tapered threads for tight, rigid joints and excellent ground continuity; High tensile strength and ductility, high corrosion resistance, high impact and shock resistance; Sizes with flat-back design ideal where fitting is mounted flat against surface; Exclusive built-in easy-pulling rollers to facilitate cable pulling through hubs and help eliminate cable damage; Wiring capacity: 300 CU-IN as per NEC 314.16(A) . Names