【Superior Material】This ball mill jar is made of high quality 304 stainless steel. Thickened walls and reinforced construction ensure exceptional durability, making it ideal for abrasive applications 【Electropolished Surface】Features an advanced electropolished surface that results in a smooth, non-porous surface. This prevents sample purity and makes cleaning easy, ensuring grinding results 【Durable Structure】Thick material and sturdy structure can effectively resist deformation and wear, extending the service life. The large R-angle design at the bottom effectively reduces material settlement and ensures a more uniform grinding effect 【Wet and Dry Grinding】This versatile tank is specially designed for wet and dry grinding processes, and can effectively handle a variety of materials, including precious metals, electronic ceramics, magnetic materials and pigments 【Multiple Sizes】Available in a variety of capacities from 50mL to 1000mL, each jar has precise dimensions. Thick safety cover design, while stainless steel's non-magnetic properties ensure compatibility with magnetic materials