This Square D 9007F side plunger head is for use with 9007C limit switches (sold separately). It has a vertical side roller plunger with spring return for operation. Square D switches and components are manufactured by Schneider Electric. Square D brand pressure, float, and limit switches have been synonymous with safety, quality, and reliable performance for over 100 years. First launched by Detroit Fuse and Manufacturing in 1902, the Square D brand and its products continue to earn customer trust today.