Essentra Components is one of the largest manufacturers of plastic knobs such as Ball Knobs, T-Knobs, Knurled Knobs, Star Knobs, 3-Prong Knobs, 4-Prong Knobs, 4-Lobe Knobs, Pull Knobs, Fluted Knobs, Tapered Knobs, Control Knobs, Instrument Knobs, Quick Release Knobs, Universal Knobs, Press-On Thumbscrew Knobs and Snap-Lock Knobs. For more than 25 years, we have pioneered the creative use of "Green" materials and technologies in our manufacturing processes. All of our plastic clamping knobs are made through injection molding. Don't see the knob style or size you need? We build complete tools in our low cost Costa Rican factory. Call 800-847-0486 or email sales@knobsource.com to discuss your plastic knob requirements today.