Flat to Round Power Plug Convertor Easy to use US/Japan Flat to Europe Round power plug converter. Withstands up to 6A with 100V/250V. Sturdy build, tight fit. Dimensions: 1.77 in x 1.38 in x 0.55 in. Weight: 0.46 oz Get it Fast! Eligible for Amazon's FREE Super Saver/Prime Shipping.