The Finest High-Carbon Tempered Steel, Careful Hand Tuning, And A Specially Designed Bar Mounting System Combine To Deliver Unsurpassed Tone, Clarity, And Resonance. An Optional Hand Damper Allows Superb Control Over Intricate Passages. Chrome Plated, Satin Finished Bars Are 1 1/4" Wide By 3/8" Thick, Tuned To A-442. Handsome All-Wood Case Is Covered In Vinyl For Extra Durability. 2 1/2 Octave Range (G5-C8). Supplied With Mallets. Without Hand Damper. M645 Is The Middle Image.