These 21 gauge butterfly collection needles are designed for laboratory and veterinary sample handling applications. Each needle is individually wrapped to support clean storage and organized use in professional environments. The needles are manufactured with stainless steel tubing and plastic wings to provide stable handling during routine procedures. The single-use design supports proper disposal after use. Supplied in a box of 50 units, this product is suitable for laboratories, veterinary clinics, educational settings, and other technical environments. Intended for laboratory and veterinary use only. Not intended for human medical, diagnostic, or therapeutic use.