Kintronic Labs manufactures a complete line of fixed and variable inductors ranging in value from 5uH to 150uH and in current rating from 10A to 300A or higher. The standard fixed and variable inductors having a current rating of 60A or less are silverplated whereas those rated 80A or higher are unplated unless requested by the customer. Fixed inductors that are 100A or less utilize a clip or clamp for adjustment depending on the current rating. Fixed inductors rated 125A or higher are designed with a more robust radial arm adjustment. Variable inductors having a current rating from 20A to 80A utilize a center shaft adjustment that controls a spring-loaded roller wheel contact.