Small, precise replacement springs designed for reliable folding knife performance and tuning. Key benefits Restores or improves deployment feel by replacing worn or weak springs. elasticity and consistent rebound provide stable, repeatable action during use. Compact size and uniform manufacture make installation straightforward and predictable for maintenance or . Product details Material: piano wire for strong elasticity and fatigue resistance. Size: overall length 31.6 mm; wire diameter 0.45 mm; coil inner diameter 2.3 mm. Package: 9 pieces per pack. Compatibility: fits for Microtech UTX85. How it solves problems Replaces fatigued original springs to reduce sluggish or uneven deployment. Allows fine tuning of tension to achieve a smoother or more responsive action without changing other components. Provides multiple spare springs for staged replacement or testing different tension levels. Typical applications Routine maintenance: keep spare springs on hand for field or workshop replacement when the original spring shows wear. Performance tuning: swap springs to adjust deployment tension for a firmer or lighter feel during carry or use. and restoration: use as direct replacement when refurbishing a folding knife or restoring action consistency. Notes Check fit and orientation before final assembly. Supplied dimensions should be confirmed against the existing spring to ensure compatibility.