Novofine 31G pen needles are precision-engineered insulin pen needles with dimensions of 0.25mm x 6mm. Each box contains 100 sterile needles designed for comfortable and accurate insulin delivery with compatible pen devices. Key features: • 31G ultra-thin needle (0.25mm diameter) • 6mm needle length • 100 sterile needles per box • Universal pen compatibility • Single-use design These pen needles are designed for subcutaneous insulin injection. Each needle is sterile and intended for single use only. The 6mm length is suitable for most patients requiring insulin therapy, while the 31G ultra-thin design helps minimize injection discomfort. Store in a clean, dry place at room temperature. Proper disposal in appropriate sharps containers is required after use.