Amana - A45614 3/8" Cut Diameter Zero Point V Grooving BitAmana A45614 3 8" Cut Diameter Zero Point V Groove Bit Amana Solid Carbide Zero Point V Grooving Bit. These bits have a "zero point" and are designed for beveling or creating a 90 V groove. For precision and accuracy, the Amana Solid Carbide Zero Point V Grooving Bits boast an impressive 0 point for beveling and creating perfectly angled and precise 90 V grooves. Specifications Cut Diameter: 3 8" Shank: 3 8" Cut Length: 3 4" Overall Length: 2 1 2"