Carmex Tiny Tool Holder - Square Shank Holder to hold Carbide Small Boring Tool - 3mm Bore x 8x16The Carmex Tiny Tool Holder Square Shank is a compact, precision grade holder designed to secure carbide Tiny tools in tight spaces. Featuring a square shank and a 3 mm bore x 8x16 form, it delivers reliable grip and accurate tool alignment for micro machining tasks. Square Shank Design: Secure, high precision grip on carbide Tiny tools to minimize runout and improve stability. 3 mm Bore: Specifically sized to hold 3 mm carbide small boring tools with