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	Rubber Stoppers lab grade with two 1/4" holes
more info... Rubber Stopper #10 (Two Holes) List price: US $6.00 Price: US $5.50 You save: US $0.50 (9%) Two Hole 42-50 mm diameter. Fits many vacuum bottles.   more info... Rubber Stopper #11 (Two holes) Price: US $6.50 2 Hole #11 Rubber Stoppers are 2-Hole #11 Tapered Rubber Stoppers that will plug bottles, lab vials. etc. 2-Hole #11 Rubber Stoppers are made from EPDM Rubber. Two Holes.   more info... Rubber Stoppers #13(Two Holes) Price: US $6.75 Size #13 with two 1/4 holes for drop out bottles