Trimmer Lever: Part Number 59843700,598437-00,714394862341.The line feeder lever is for line trimmers Compatible with the following: For Black and Decker ST7700 ST7000 Type 1 Easy to Use: Line feeder lever 59843700 releases the cutting line from the spool during the auto-feed process Warm Tips: Wear work gloves to protect your hands when installing this part After-Sales Assurance: Pls contact us first when you get some problem, we will offer you assistance asap 59843700 Trimmer Replacement Lever Compatible with Black & Decker ST7000 ST7700 Type 1, 6-Pack Lever Replaces Part Number for 598437-00, 714394862341