This key clamp fitting is a variable elbow connector (110° and 180°). Often used to join staircase top rail to end uprights to form a connection between a slop tube and an end post.

SIZE Suit to Pipe O.D. mm KG/PC PC/CTN.
B 33.7 0.390 50
C 42.4 0.620 30
D 48.3 0.820 20