3 Abou-Rass Calibrated Endo Explorer DE (#1) Hu-Friedy Mfg. · #MAR-EX3 Calibrated endo explorer, double-ended. Add to cart Product Information ManufacturerHu-Friedy Mfg. More Products More from Hu-Friedy Mfg. (3,328) More Periapical Surgery Instruments (220)