Not too much is known about this W9WBL single-lever paddle (there is no serial number on it). Some interesting and unique features are part of this paddle. For example, there are rubber feet on three different surfaces - giving the user three options for orienting the paddle. The main arm pivots from one end, and is kept in place by two very small springs adjusted by the two nylon screws seen near the middle of the mechanism. Three small nylon setscrews can be seen in the middle of the arm - these fill threaded holes that can be used to change the fingerpiece height.