Fullerton Tool 32041 | 1/4" Diameter x 1/4" Shank x 3/4" LOC x 2-1/2" OAL 4 Flute Uncoated Solid Carbide Ball End Mill - All Industrial Tool Supply
SpeTool 4 Flutes Ball Nose End Mill Solid Carbide CNC Router Bits 1/4 Inch Shank with 3 Inch Long Spiral Milling Tool: Amazon.com: Tools & Home Improvement