There is no danger of this strap marring a guitar's finish, because we don't use metal parts on it. These straps are beautiful, comfortable and durable. The Italian tanning process gives our leather its exceptionally rich color and texture. Plus, the leathers are folded for a flexible, body-forming feel. These straps look like an old leather jacket. (You know, the one you can't throw away.) Each handle is 2 inches wide and extra thick (5/32 inches), and the bottom edges are rounded for comfort and feature the DiMarzio® logo.