Boss RC-20 Looper Guitar Effect Pedal. The item "Boss RC-20 Looper Guitar Effect Pedal" is in sale since Thursday, December 5, 2019. This item is in the category "Musical Instruments & Gear\Guitars & Basses\Parts & Accessories\Effects Pedals\Loopers & Samplers". The seller is "jufer-6851" and is located in Woodland Hills, California. This item can be shipped to United States.