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The Bison 4304 series Cast Iron 4 Jaw Independent Chuck (front mount
this insert supports both basic and the most demanding threading tasks—delivering dependable results across many applications with fewer tool changes
003 mm ensures consistent hole sizes
and assemblies where tight H7 tolerance is required
Durable carbide with wear-resistant W coating: Premium carbide paired with a protective W coating delivers longer tool life
OSG Carbide Spotting & Chamfering Drill - Micro Grain - Uncoated - 100° - 12mm MTS The Bison 4304 series CastThe OSG Carbide Spotting & Chamfering Drill (12 mm) is a precision cutting tool designed for machinists, fabricators, engineers, and hobbyists who need accurate spotting and chamfering with a clean, consistent edge. Made from micro grain carbide and left uncoated, it delivers dependable performance at a 100 chamfer angle for reliable results across a range of materials. Micro grain carbide construction: provides exceptional durability and long tool
