304 Stainless Steel Hexagonal Threaded Needle Experimental Filling Needle Product Description The 304 Stainless Steel Hexagonal Threaded Needle for experimental liquid filling is a precision-engineered fluid transfer component designed for reliability and ease of use in laboratory and industrial settings. Manufactured from corrosion-resistant 304 stainless steel, it ensures compatibility with a wide range of liquids and offers long-term durability. The integrated hexagonal