Specification

Size in Top connection(LH) Bottom connection I.D. in
Standard Optional Square Hex. Square Hex.
2-1/2 6-5/8 REG 4-1/2 REG NC26 1-1/4
3 6-5/8 REG 4-1/2 REG NC31 NC26 1-3/4 1-1/4
3-1/2 6-5/8 REG 4-1/2 REG NC38 NC31 2-1/4 1-3/4
4-1/4 6-5/8 REG 4-1/2 REG NC46 NC38 2-4/5 2-1/4
6-5/8 REG 4-1/2 REG NC50 NC38 2-4/5 2-1/4
5-1/4 6-5/8 REG 5-1/2 FH NC46 3-1/4 3
6-5/8 REG NC56 NC50 3-1/4 3-1/4
6 6-5/8 REG 5-1/2 FH 3-1/2
6-5/8 REG NC56 3-1/2