Laboratory Grade Rubber Stopper with Hole, Black SBR Rubber, Size #5, 28 x 24 x 25mm, 21PK, United Scientific, Mfr#: 259150H-55

Laboratory Grade Rubber Stoppers with hole are offered in a wide range of common sizes for most laboratory applications. Available standard black SBR rubber. Rubber stoppers with hole are molded according to standard industry size specification. Packaged in approximately one pound packages.Shipping Weight: 1 lbsShipping Dimensions: 5.00 x 5.00 x 5.00Research or further manufacturing use only, not for food or drug use.