Designed for Junlai 930 Models:
Specifically crafted to fit the Wing Sung Junlai 930 piston mechanism for precise and secure maintenance.

Smooth Disassembly:
Allows effortless removal of the piston unit without damaging internal components—ideal for cleaning and lubrication.

Durable Construction:
Made from high-strength metal, ensuring long-lasting performance and resistance to bending or stripping.

Easy Piston Maintenance:
Perfect for users who want to keep their piston filler in top condition by performing occasional deep cleaning.

Compact & Lightweight:
Small enough to store with your pen accessories, making it convenient for travel or at-home use.