Hey there Microtech owners! If your UTX85 or UT series knife is feeling a bit sluggish or not firing like it used to, these replacement springs are exactly what you need. This pack comes with 20 high-quality spring steel springs that are heat-treated for maximum durability and wear resistance. The measurements are perfect for Microtech knives: 3.5mm length, 0.35mm wire diameter, and 2.9mm circle diameter. Having 20 springs means you've got plenty for multiple repairs or to share with your knife buddies. The springs maintain great elasticity and will keep their shape through tons of use. Whether you're a knife enthusiast who likes doing your own maintenance or a professional who needs reliable replacement parts, these springs will get your Microtech firing smoothly again. Super easy to install if you're comfortable with basic knife maintenance - just pop out the old spring and drop in a new one. Keep your EDC in perfect working order with these affordable, reliable replacement springs!