Different colors represent different needle sizes.

In general, red represents the 14# needle, green represents the 12# needle, pink represents the 9# needle, blue represents the 7# needle, and yellow represents the 5# needle.

The smaller the needle size, the finer the needle, and different needles can be selected for different people.

In order to meet the needs of infusion, choose the shortest and thinnest catheter. The selected vein must accommodate at least twice the length and thickness of the catheter to provide adequate blood flow and to allow for intravenous infusion therapy.

If you have any questions, please contact us. Our company can produce various customized needles, medical needles, puncture needles, hypodermic needles, biopsy needles, vaccine needles, injection needles, syringe needles, veterinary needles, pencil point needle, ovum pick up needles, spinal needles, etc. If you need customized needle products, please contact us. We look forward to your inquiry! The quality of the products manufactured in our factory will surely satisfy you!

Please contact us if you need: zhang@sz-manners.com