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collet chuck extensions
this product can also accept NMTB 40 or BT 40 tooling
This product requires the use of a retention knob fitted to your machine specifications
Our extended length end mill holders allow for milling in deeper and tighter spaces
They are designed with a square drive in the collet
ER20 Standard Collets ER20 Collets:ER20-0125 collet chuck extensionsOur ER20 collets have a capacity ranging from . 0625 . 5000 inches or in metric sizes from 2mm up to 13mm. The number shown on the collet is the largest size that particular collet can hold, but it can be tightened to a smaller size. Purchase separately or in a set for a discounted price. Most sizes and sets are available for same day shipment.
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