These are for general dispensing use. These are disposable, non-precision blunt end dispensing needles, with stainless steel shafts and polyethylene hubs. Available in bulk packages only, for simple applications. Not usually recommended for Robots. Available in 100 Piece Boxes to 1,000 piece bags, 1/2" , 1" , and 1 1/2" lengths. We are happy to quote longer lengths and custom cuts.