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Best Built Ultrasonic Cleaners - 1/2 Gallon Ring Clamps - Pins - Anvils Discussions and illustrations describe howThis Ultrasonic Cleaner utilizes ultrasonic waves to get rid of any dirt or grease on your fine jewelry pieces. Created of stainless steel, with a heated on off switch. Capacity: 1 2 gallon (1. 75 liters) Timer: 30 minute timer Maximum Heating Temperature: 85C 185F Total Power Consumption: 60 170 W Ultrasonic Frequency: 40 khz Interior Dimensions: 5 7 8" x 5 3 8" x 3 7 8" Exterior Dimensions: 7" x 6 1 4" x 8 3 8"