CMT 317.280.12 Hinge Boring Bit 28 x 57.5mm LH SDWH TIMBER-HEX SS Screw making it a reliable choice

making it a reliable choice for drilling through heavily reinforced substrates

secure seating that sits cleanly against the deck board surface

Chamfer Grooves

Quik Drive attachments

CMT 317.280.12 Hinge Boring Bit 28 x 57.5mm LH SDWH TIMBER-HEX SS Screw making it a reliable choiceThe CMT 317. 280 is a (Hinge Boring Bit (57. 5mm)). Hinge boring bit for drilling flat bottom hinge cup holes in cabinet doors and face frames. The flat bottom geometry is required for European style concealed hinges. Rotation: Left hand (LH). SPECIFICATIONS Diameter (D) 28mm Total Length (L) 57. 7mm Shank (S) 10x26mm Tooth Geometry Negatively ground spurs Spurs 2 Number of Teeth 2 Product Type Hinge Boring Bit Series Hinge Boring Bit (57. 5mm)