Perfect center hole alignment for all hole sizes within the range of the punch. Accommodates itself automatically to transfer center holes accurately. Perfect hole center alignmnet which has a hardened guide cone is placed into the clean edge of the hole t
Diameter: 3/16″
L: 3-1/8″
For 1/4 ~ 3/4″ holes (In practice cone may be closer to .65″ diameter )
Runout: 0.0012″
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