Sort of a bastard reamer-drill, this hand tool can make or enlarge 3/16, 1/4, 5/16 and 3/8" holes in soft material for quicky jobs without setup.
The Unibit comes in several sizes and ranges. The top one drills 1/8"-1/2" by 1/32" increments while the lower drills 1/4"-3/4" by 1/16" increments in up to 1/8" material. They have self starting tips and can handle mild steel.
Another bastard tool, the holesaw uses a pilot bit to center and a hacksaw like blade curved in an arc. Useful in cutting larger holes in wood and softer materials up to the depth of the blade. Sizes may range up to 5" diameter.
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