![[40439-027] Handle Locking Knob for WEN 40439](https://www.goodprohardwaresupply.com/wp-content/uploads/2026/10/40439-027-handle-locking-knob-wen-40439.webp)
Handle Locking Knob Part Number: 40439-027
Compatible with the following Model:
- WEN 40439 40V Max Lithium Ion 19-Inch Cordless 3-in-1 Lawn Mower with Two Batteries, 16-Gallon Bag and Charger
For CA residents, click here for Proposition 65 information
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