Model #2600 is an adaptation of our model #2500 except it opens 6". there are four tapped holes, to accept our drill bushings, so now you can drill a multiple combination of holes using various hole sizes. The jig does not have to be moved and is, therefore, more accurate. Drill bushing hole sizes are 1/4”, 5/16”, & 3/8”. Six bushings are supplied (two of each size). The bushings and center are precision hardened drill steel and plated for rust protection. • Opens to a 6” wide capacity