Note: Stopper numbers ("#i")s are different from standard American
   33720-00 Rubber stopper, #00,13mm tubes   _ Each 0.12 Buy/Quote
      33721 Rubber stopper, #1, 18mm tubes   _ Each 0.25 Buy/Quote
   33710-6i      Rubber stopper-6i (US: 3)   _ Each 0.32 Buy/Quote
      33724 Rubber stopper, #4, 25mm tubes   _ Each 0.48 Buy/Quote
    33734-2   Cork stopper, #2, 13mm tubes   _ Each 0.10 Buy/Quote
    33734-5   Cork stopper, #5, 18mm tubes   _ Each 0.14 Buy/Quote
   33734-10  Cork stopper, #10 50/125ml EF   _ Each 0.40 Buy/Quote
   33734-16 Cork stopper, #16 250/500ml EF   _ Each 0.90 Buy/Quote
   33734-18       Cork stopper, #18, 1L EF   _ Each 1.10 Buy/Quote
                        rubber stoppers, cork stopper