The Eclipse 410-3003 MT3 Counterbore Countersink Pin Drive Holder is an industrial MT3 taper tool holder designed to mount counterbore and countersink tooling with a 1-1/4" ID. It uses a pin drive interface to secure tooling and maintain alignment during machining operations. Suitable for milling and drilling tasks that require MT3 counterbore and countersink tooling, this holder pairs with compatible inserts in professional manufacturing setups.
