"THIS NSN IS USED TO PURCHASE AMINIMUM OF 1 TO A MAXIMUM OF 39 CONTAINERS, TO PURCHASE A MINIMUM OF 40 TO A MAXIMUM OF 119 CONTAINERS USE NSN 3439-01-407-7841, TO PURCHASE A MINIMUM OF 120 OR MORE CONTAINERS USE NSN 3439-01-407-7845. CERTIFICATION:PWA1346D; RR9057/28 ISS.1. COMPOSITION: MAGNESIUM ZIRCONATE, NICKEL CHROMIUM ALLOY."