Great for cut? out work, dovetailing, hinge routing and so much more. The kit contains 8 of the most popularly? used sizes guides, 2 lock nuts and 1 template guide adapter. Router template guide set allows you to use router with ease and accuracy with a wide variety of templates. Machined out of brass construction to make sure rugged durability and long lasting high performance. With a storage case, can easy store the tools, guide bushings OD specs: 10 12 14 16 18 20 24 30.