[Compatible with] The generator interlock kit is designed to work seamlessly for QO or homeliness 150 and 200 amp panels. [What you get] Breaker interlock kit comes with everything you need to get started, including 2 x interlock plate, 1 x 3/16inch drill bit, 4 x screws and nuts, 2 x zip ties and 1 x installation instructions. [Product of High Quality] The household circuit breaker interlock switch is anodized, which has excellent corrosion resistance and insulation. The uniquely designed screws and nuts have high friction, will not be separated, which is durable and not easy to get rusted. [Easy installation] 1-3/8 inch space between the main breaker and the generator breaker. The interlock kit is specifically designed for easy installation, with a 3/16inch drill bit that can penetrate your breaker panel. [Safe] Professional interlock kit allows you to direct generator power to any circuit within your home safely, avoid the inconvenience of unexpected power outages,ensuring access to all your electrical appliances. Colour:As Shown Material:aluminum alloy Package Contents: 2 x interlock plate 1 x 3/16inch drill bit 3 x screws and nuts 2 x zip ties 1 x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.