Milescraft 1312 Drill Block
Drill straight holes every time. The two product v-grooves allow for usage on corners and even cylindrical surfaces too. The inserted solid metal guide offers the six common drill diameters: 1/8′, 3/16′, 1/4′, 5/16′, 3/8′, and 1/2′. The ergonomic handy design of DrillBlock fits into the hands with ease and alleviates awkwardness.