Allen Tel Products GB13B 6-1/8-Inch By 3-1/8-Inch By 4-3/8-Inch By 3-3/4-Inch Die Cast Aluminum Distributing Ring, 100-Pack Distributing Ring Constructed of die cast aluminum Designed for cross connect wiring applications GB10 Series has open end equipped with plastic protective cap 6-1/8-Inch By 3-1/8-Inch By 4-3/8-Inch By 3-3/4-Inch