DescriptionThis knob are special star shape design, great for comfortable hand grip, accord with ergonomic design and plays a non-slip effect without scratching your hands. Application widely used for mechanical equipment, instrument and apparatus, food and industry equipment.Features- Material:ABS + Stainless Steel. - Size:4.60X4.60X4.30cm/1.81X1.81X1.69inch. - Star hand knob tightening screw adopts a hex star design, easy to grip and non-slip without scratching your hands. - This plastic hand knob screw is easy to install and remove and does not require any tools. - Someone uses as an umbrella handle, maybe it can motivate your project, Is a small and replaceable part. - Widely used in furniture decoration, electronic equipment, mechanical equipment and other related industries. - Can be used for most types of machine tools, this kit can definitely meet all your daily needs.