18MM MAGNETIC SCREW CAP SILICONE/PTFE 1,3MM 100PCS (100/pk)
https://www.teragenomics.com/shop/rw2-1030-72016-18mm-magnetic-screw-cap-silicone-ptfe-13mm-100pcs-100-pk-313078
https://www.teragenomics.com/web/image/product.template/313078/image_1920?unique=07fba14
This 18MM is guaranteed a 18MM with the use of SILICONE/PTFE and directly supplied to your lab by Gentaur's warehouse.
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30-day money-back guarantee
Shipping: 2-3 Business Days