Pink 20 gauge taper tip needle has an overall length of 1.25 inches, and an ID of .024 inches (0.620mm). Taper tip needles are designed to decrease the occurance of dripping of material, due to the tapered shape which created less backpressure as the material is dispensed. Similar to Teflon and polypropylene needles, they also offer scratch free operation while working with sensitive parts. If you order a quantity of 1, you will receive 50 tips in a box.