Beautiful metal case is 5 11/16" long with a 5/8" diameter having a reeded edge end cap with machine threads for closure. The 5 different color rods seem to be bakelite type material. The tube is handed for examination following the request that once opened and handed back to the magician a single color is placed within. End cap is threaded back on and with all this and the inability to see through the solid metal case, the magician is able to divine correctly the color within! 

Condition First Rate.