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Large and rugged, our 4-Prong and Star knobs are excellent for
applications requiring high torque or heavy-duty clamping. Molded of
thermoplastic, our knobs are four times more impact resistant than similar
phenolic knobs. The smooth lines and rounded edges make the Star Knob a
popular choice in consumer products, while the 4-Prong is known for its
stout appearance and easy grip. Inserts are available as both male and
female, blind or thru. Metric and locking are also standard. Insert
materials include steel, brass, stainless, and aluminum.