The RAP-B-379U-M616 consists of a 1" diameter rubber ball, connected to a M6-1 X 6MM male threaded post.
Metric Thread Diameter and Pitch Options::
M6-1 X 6MM
Material:
High Strength Composite & Steel
Ball Size:
1" Rubber Ball "B" Size
Note:
The "U" in the part number reflects product packaged in poly bag.
B size 1" (Holds up to 2 lbs)
High Strength Composite
Steel
Base
Tough-Ball
Packaged in Poly Bag