Science › RUBBER STOPPERS - BOTTOM DIA. 15.5MM / TOP DIA. 19MM - 1 HOLE #4 (PACK OF 10) Image 1 of 1 RUBBER STOPPERS - BOTTOM DIA. 15.5MM / TOP DIA. 19MM - 1 HOLE #4 (PACK OF 10) $9.90 Code: LW4957-01 Add To Cart Added! Code: LW4957-01 Rubber stopper. Top x Length x Bottom: 19 × 18.5 × 15.5mm. You Might Also Like Quick View RUBBER STOPPERS - BOTTOM DIA. 16MM / TOP DIA. 19.5MM - 1 HOLE #5 (PACK OF 10) $11.00 Quick View RUBBER STOPPERS - BOTTOM DIA. 17MM / TOP DIA. 23MM - 1 HOLE #6 (PACK OF 10) $12.10 Quick View RUBBER STOPPERS - BOTTOM DIA. 13.5MM / TOP DIA. 16MM - 1 HOLE #2 (PACK OF 10) $6.60 Quick View RUBBER STOPPERS - BOTTOM DIA. 30MM / TOP DIA. 34MM - 1 HOLE #11 (PACK OF 10) $19.25 Quick View RUBBER STOPPERS - BOTTOM DIA. 22MM / TOP DIA. 27MM - 1 HOLE #8 (PACK OF 10) $15.40