Round lid surrounded by a square frame. Please note that the cover is in the frame of another manufacturer. The lid is similar to that of another manufacturer
Translation of the text on the cover: HOT Caution Optical Fiber *6900 IS 489 2012 SII D400 EN124 R600 Menashe Baruch & Co. Ltd. The cover must be locked On the frame: Rokach Yosef & Sons Ltd. D400 EN124 CHINA