This holder use the standard ER 16 collets. It is possible to use different types of nuts while using the same holder and collets. Standard, M type and bearing type, they offer stronger holding and reduce vibration of the tool.
All chucks have passed hardness and anti-crack test. Low strength steel could lead crack and rust very soon, especially by the inside pocket area, accuracy will also drop only after a little while, so make sure avoid purchasing bad quality and unbalanced chucks.
Accuracy: 0.00015 (0.004 mm). Processing Length: 1.97 (50 mm). 8 x BT30 ER25UM Collet Chunck.
Thank you for your cooperation. We care about our valued buyers, if you have any questions, our Customer Service staffs will be very glad to help you. We will try our best to reply your emails, however, due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately.The item "8pcs BT30-ER25UM Collet Chuck 1.97 50mm Length Tool Holder Set NEW" is in sale since Monday, December 7, 2020. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Workholding & Toolholding\Toolholding\Other Toolholding". The seller is "smile58956_8" and is located in La Puente, California. This item can be shipped to United States.