ERX.78 B-M10-C3 is a type of knurled knob from the Handwheels & Revolving Handles product range of Elesa & Ganter. This particular type of knob comes with an ergonomic design, with an easy to grip, highly visible knurling along the outside surface. It has a matte chrome plated finish, which gives it a long-lasting, highly corrosion resistant surface, and the matte finish provides a great tactile feel in the hand. The M10 internal thread is compatible with other industry-standard components, giving it a wide range of compatibility with existing hardware. The C3 version of this product also has an internal threaded bushing, as well as a sealing ring that makes it suitable for use in clean environments, helping to keep any debris, dust, and oil out of the enclosure.