NO-M.A.R 4" Multi Purpose Magnetic Vise V Groove Soft Jaws NO-M.A.R V Groove Magnetic Vise Soft Jaws / CNC Machined From NO-M.A.R Polymer NO-M.A.R Polymer Protects Polished Metal Surfaces without leaving marks or scratches Fit in any 4" Vise with 4" wide jaws or larger / Neodymium magnets for Superior Hold! Extra Thick Soft Jaw Body for High Strength! / Made in The USA from US Materials! Great for light to medium duty holding power / Not for high grip rotational torque