Sterile pen needles are designed for smooth, comfortable subcutaneous injections, helping ensure accurate medication delivery with minimal discomfort.Benefits:- Provides a comfortable injection experience with reduced pain.- Short 4 mm length supports proper subcutaneous injection.- Fine 31G needle helps minimize skin trauma.- Compatible with most insulin and medication pens.- Sterile and individually sealed for safe use.- Pack of 100 needles offers long-term convenience.Box Components:- Pen needles 31G × 4 mm (100 pieces).- Protective caps.- Instruction leaflet.Precautions:- For single use only; do not reuse or share needles.- Do not use if the package is damaged or opened.- Store in a cool, dry place away from direct sunlight.- Keep out of reach of children.- Ensure proper attachment to the pen before injection.Side Effects:- Mild pain or discomfort at the injection site.- Slight redness, swelling, or irritation.- Rare allergic reaction to materials used.