Product Description Parallel jaw insert surfaces exert uniform, accurate gripping force up to three times greater than can be achieved with split-steel collets, each collet accepts and precisely centers a wide range of both decimal or metric diameters (within individual capacity ranges) to speed setups and increase machining productivity, Durable one-piece construction. Synthetic rubber retains flexibility and resists deterioration from heat, coolants and cutting compounds, steel jaw inserts precision ground after molding process to ensure maximum gripping accuracy. Hardened for greater wear resistance than split steel collets, each collet bore is held concentric to the O.D. Tapers, front and back, to minimize T.I.R. From the Manufacturer Unique in design and operation, the Jacobs Rubber-Flex Collet can generate 2 to 3 times the gripping power of a conventional collet. This Jacobs J422 Rubber-Flex Collet can range from 0.250 to 0.383- Inch (6.4 to 9.7 Millimeter). It outperforms conventional split-steel collets in gripping power, accuracy, and durability. Like all Jacobs products, this product comes with a one year factory warranty.
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