M.R. Enterprises is the manufacturer of Spring Toggle. M.R. Enterprises is an ISO 9001:2000 certified company. Spring Toggles are available in various screw size and hole diameters. These are available in standard duty toggle bolt and toggle wings only. The standard duty toggle bolt is a spring wing type hollow wall anchor designed for use in black, wall board and other hollow base materials. It is a spring wing type hollow wall anchor that can be used for non-standard applications like extra long or ornament.