This is a Lot of (42) Lyndex B30-4500 Pull Stud/Retension Knobs. They they have a 45 deg angle radius and were mounted on BT30 taper toolholders with a M12 x 1.75 thread. There is One (1) that is BRAND NEW IN BOX and (41) that were used in our CNC Machine shop and only removed because a new machine required a different pull stud.
These are $30 each from grainger
https://www.grainger.com/product/LYNDEX-NIKKEN-Retention-Knob-BT30-Taper-38NV95
Retiring CNC machine shop owner of 35+ years. Selling tools, equipment, and machinery from my closed CNC Machine Shop.
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***Please do not ask if this is still available, the listing will be removed when sold.***
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You will receive the items as shown in pictures
All items are sold AS IS and are in good working condition unless otherwise stated or shown