Improve your skills with the Adjustable Beginner Guitar Helper Tool Helps to teach you the shapes of G, C and D chords on a guitar Keeps your fingers from getting sore with lots of repetition A must-have for any guitar newbie to help them learn the basics Suitable for regular guitars with an adjustable clip to fit necks 42.8mm - 44.5mm Works for both electric and acoustic guitars Dimensions: 23cm x 19cm x 2.5cm Materials: ABS Save 50% on the Adjustable Beginner Guitar Helper Tool - now only 5.99 pounds