AD Series All Metal Machined Precision Tips High precision TSS tip series consists of a stainless-steel shaft with a brass luer lock hub. Premium line of dispensing needles is burr-free and electro-polished shaft for unobstructed and consistent material flow. Designed to dispense most viscosity fluids and adhesives especially SMT adhesives, solvents & UV cure. Silver colour. Choice of tube lengths. In packs of (12).