2 Pounds Rubber Stopper Assortment - Includes 1-Hole and 2-Hole Stoppers Grasp a comet's tail and

Grasp a comet's tail and learn about how meteoroids become falling stars

This product comes with an extension tube for targeted application

knitting yarn and craft items

Range: DC to 10 MHz

and a third feature to clear the batch modes to count freely without stopping

2 Pounds Rubber Stopper Assortment - Includes 1-Hole and 2-Hole Stoppers Grasp a comet's tail and2 pounds of assorted size 1 hole and 2 hole rubber stoppers Made of solid natural rubber that stays pliable over a long period of time Ideal for use with non aggressive or concentrated solutions Low sulfur content Withstand temperatures from 25 to 70C (13 to 158F) Autoclavable