Description This stainless steel pen spring is designed for optimal pressure refill and accurate return movement in ballpoint pens and gel pens. The high-strength spring steel compression springs ensure consistent pen tip recovery, even with continuous writing. Suitable for mechanical pens and compatible with various pen refill spring sizes, it's an ideal mechanical spring solution for office, school, and travel. Features -Color:Silver -Material:Stainless steel -Size:2.00X0.45X0.45cm/0.79X0.18X0.18in -Precise refilling: stainless steel pen springs provide accurate compression, ensuring your ballpoint pen refill is always ready for smooth writing without jams or delays -Universal compatibility: the small compression spring kit is designed for a wide range of pen brands and models, making pen spring replacement quick and convenient for users needing repair -sturdy material: made from spring steel compression springs, these metal spring boast resilience, prolonging pen life and reducing the need for frequent replacement -Compact & portable: mini compression springs are lightweight and easy to store, fitting perfectly in stationary bags for students, professionals, and travelers needing reliable spare springs -Consistent performance: these stainless steel small compression springs maintain stable elasticity even under extreme temperatures or constant use, ensuring a steady writing pressure every timePackage list: 50 x ballpoint refill springs