The patented isolox® XL is a new larger version of the popular Skylox® product that has been specifically designed to accommodate everything from small to large breakers and those with color coding collars attached. isolox® XL is a single solution for all of your cockpit circuit breaker needs for a wide range of breakers. With isolox® XL, you can inventory one product that will save you time and money. isolox® XL will complete your toolbox of Circuit Breaker Lockout tools fitting the widest variety of breakers currently in use.