CMT 537.064.31 Forstner Bit, 1/4-Inch Diameter, 3/8-Inch Shank Hard & Soft Wood

CMT Forstner Bit 1/4" with a 3/8" shank

It's 3-35/64" overall length

Recommended speed for Softwood is 2400 RPM and for Hardwood is 700 RPM.