1Good 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. 2Anodized 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. 3Excellent 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. 4Multifunctional: 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. 5Easy To Install: This mechanical interlock kit provides a 3/16 drill bit that easily passes through the breaker panel for easy installation, eliminating the need for an additional control box or wiring. 2 x Interlock Plates 3 x Screws 3 x Nuts 1 x Generator Start Program Label 2 x Reminder Labels 2 x Cable Ties 1 x Manual 1 x Drill Bit