2Pcs Rubber Stopper Bungs Laboratory Solid Hole Stop Push-In Sealing Plug - 9 37x45Mm & 7 28x37Mm

2pcs rubber test tube plug:1pcs 9# 37*45mm & 1pcs 7# 28*37mm 100% brand new Can be used for test tube flask stopper or other bottles Color: Beige Material: Rubber Size: 9# 37*45mm & 7# 28*37mm Package Contents: 2 * rubber test tube plug Only the above package content other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.