NO-M.A.R Polymer Magnetic Vise Soft Jaws For Polished Hex Fittings and Round Stock NO-M.A.R Hex Groove Magnetic Vise Soft Jaws / CNC Machined From NO-M.A.R Polymer NO-M.A.R Polymer Protects your Hex fittings Finish. / Holds Hex AN fitting from 3-AN to 32-AN Fit in any 4" Vise with 4" wide jaws / Neodymium magnets for Superior Hold! Light to Medium duty use Only / Designed to protect delicate polished metal surfaces