Ool Holder EFE-16ER for. 40 position Multifix type Quick Change Lathe Tool Post. 1 PC external threading tool holder, not include multifix tool post and 16ER threading carbide insert. Net weight:1.7 KGS Gross weight: 1.8 KGS. So we revise EFE to EFE-16ER which can accept standard carbide threading insert 16ER. On photos it shows BFE-16ER holder. EFE-16ER is just smaller size.