This product is sold as Each. It is used in Pairs.
1-3/64" (1.047) eccentric offset
Allows an M76 Imperial Four to be installed on pipes as close together as 5-29/32 inches or as far apart as 10-3/32 inches.
Includes union O-ring seal and union washer
This appearance of this part is the result of the 3,000+ degrees F soldering process. It isn't "bad" and it isn't "used".
Use these K1037 wall unions in place of the K1034 wall unions in the instructions: