Features 1,Good Compatibility: This generator electrical interlock kit has good compatibility and is compatible with for Square D QO or for Homeline single level throw 100 or 125 amp panels. 2,Anodized Surface Treatment: This interlock breaker kit adopts anodized surface treatment, which forms a dense aluminium oxide film on its surface, with better erosion resistance, electrical insulation and heat insulation, allowing you to use electricity safely. 3,Excellent Aluminium Alloy Material: This electrical interlocking panel is made of excellent aluminium alloy material, which is sturdy and durable, not easy to be damaged, and has a long service life. 4,Multifunctional: This generator interlock kit is multifunctional and can be used to safely direct generator power to any circuit in your home, generating electricity safely while ensuring that you have access to all of your household appliances. 5,Easy To Install: This mechanical interlock kit provides a 3 or 16 drill bit that easily passes through the breaker panel for easy installation, eliminating the need for an additional control box or wiring. Specification Item Type: Generator Interlock Kit Model: SQD100A Material: Aluminum Alloy Spacing Between Main Breaker and Branch Breakers: 3 or 47 or 8in Package List 2 x Interlock Plates3 x Screws3 x Nuts1 x Generator Start Program Label2 x Reminder Labels2 x Cable Ties1 x Manual1 x Drill Bit Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.