Penny head hollow glass stopper with closed bottom, grounded, used for any apparatus with 24/40 standard ground taper outer joint.

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Penny head hollow glass stopper with closed bottom, grounded, used for any apparatus with 24/40 standard ground taper outer joint.

  • Penny head hollow glass stoppers with 24/40 standard taper outer joints.
  • Provide secure closures for 24/40 jointed flasks, receivers and other apparatus.
  • Heavy-wall borosilicate 3.3 glass with precision-ground joint surfaces.
  • Hollow design keeps the stoppers lighter and easier to grip.
  • Pack of 6 stoppers, economical for labs using many 24/40 joints.

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