DrillBlock ™ allows you to drill straight holes every time. The inserted solid metal guide offers the six common drill diameters: 3mm, 4mm, 6mm, 8mm, 10mm, and 12mm on the metric version or 1/8in, 3/16in, 1/4in, 5/16in, 3/8in, and 1/2in on the imperial version. It is held at a tight tolerance and allows you to drill a hole 90 degrees to any surface. With the two v-grooves it also allows for use on corners and even cylindrical surfaces too.
The centre lines ensure accurate alignment. The non-slip padding holds the DrillBlock™ in place while preventing both slipping and marring. Ergonomic handy design fits into the hands with ease.