Weller ETR 1.6 mm Screwdriver 34.5 mm Soldering Iron Tip for LR21, LR20, WEP70 4ETR-1 4ETR -1

The Weller 4ETR-1 screwdriver soldering iron tip is a precision replacement tip optimized for LR21 (old generation), LR20, and WEP70 soldering irons. Its 1.6 mm wide, 34.5 mm long blade design delivers enhanced heat transfer and broad contact for confident soldering of through-hole and leaded joints.

Engineered with a hardened material composition, this tip resists distortion during thermal cycling, ensuring durability in professional and workshop environments. Its form factor allows technicians to maintain precise soldering control, accommodating both routine assembly and service repair scenarios.

The screwdriver tip geometry improves heat distribution, enabling effective solder wetting across straight edges and maximized coverage of larger joint surfaces. A narrow tip width permits access to targeted leaded components without interfering with nearby circuitry.

Compatible with legacy and contemporary Weller handheld soldering units, this replaceable tip streamlines maintenance workflows. With its ET-series interface, it seamlessly mounts into LR21, LR20, and WEP70 handles and stations - allowing quick swaps and preserving tool investment.

UPC approval provides manufacturing traceability and quality assurance. The tip is particularly suited for electronics assembly, rework, and repair tasks that demand confident solder flow and robust thermal conduction.

Key applications include retrofitting older equipment, routine joint formation, and workshop maintenance. Technicians can replace worn tips easily without replacing the entire soldering iron, minimizing interruptions and maintaining productivity.

Screwdriver-shaped tip for broad contact and efficient heat transfer. 1.6 mm tip width and 34.5 mm length for precision in electronics work. Compatible with LR21, LR20, and WEP70 soldering irons using ET interface. Durable material for repeated thermal cycling in industrial and laboratory settings.

Replaceable design streamlines upkeep and reduces tool downtime. UPC approval ensures product traceability and reliable performance. Ideal for through-hole, leaded, and general-purpose solder joints. Widely used in electronics manufacturing, service workshops, and lab environments.

Explore more Weller soldering tips and accessories in the Soldering Iron Tips category for high-performance electronics assembly and service solutions.