A fast, convenient tool for line boring, using just a regular drill bit fitted with a stop collar. 2 hole center distances: 1" and 3/4" (32mm). Comes with 5, 7, & 9mm, and 1/4" bushings, and indexing pin. Can be adjusted to drill holes from 1" to 7" in from the edge. Aluminum body with brass knobs and hardened steel bushings. Imported