3-piece L100 series coupling set includes two coupling halves and an NBR rubber insert.

3/4" bore with 3/16" keyway and 2 set screws on one coupling half.

1-1/8" bore with 1/4" keyway and 2 set screws on the matching coupling half.

Interchangeable with Lovejoy, Martin, Browning, TB Woods, and other L-jaw couplers.