These FISCH SP Brad Point or lip and spur bits are precisely ground and sharpened in Austria with the exact geometry needed for fast accurate drilling. Available in a range of both metric and imperial sizes suiting all types of timber. N.B 3mm - 9mm have same shank as diameter, 10mm - 18mm have a 10mm shank, 20mm has a 13mm shank. 1/8", 3/16" and 1/4" have same shank as diameter.