Bottle plug stopper--the test tube plug is made of material, which is durable and practical for a long time use, Tapered Flask Plug; Laboratory bottle stopper has the good waterproof and effect, Solid Rubber Stopper; Test tube plugs--the plug is made of rubber, good sealing, which has a, Rubber Stopper; Laboratory rubber plug--suitable for scientific research laboratory use, especially for use with non-aggressive or concentrated solutions, Bottle Hole Stopper; Test tube sealing plug--the test tube is made of high-class rubber material, which can withstand long-term use, Solid Rubber Sealing Plug
What's in the box
100 x Science Supplies
