1. What You Get1Pcs 8mm lead screw, Lead screw rod dia.: 8mm; Pitch: 4mm, Lead: 16mm, 4 starts; Total length: 150mm / 5.91 inch ; with 1Pcs brass lead screw nut, no end machining.2. Various NutsThe standard nut with the lead screw is round brass nut, we also have square brass nut, trimming brass nut, POM round nut, POM trimming nut, stainless round nut, stainless hex nut.3. Meet Your All Needs about Lead ScrewsWith factory resource, we can provide many styles of the lead screws, with different lead screw rod diameters, different length, pitch and lead, even with different material. We also have related products for the lead screw, the taps for making the nuts and so on.4. Excellent Service, Worry Free to Buy We have a professional team to answer your question during 24 hours, we provide technical support before, in and after your purchase of lead screws.