GearWrench 3944 Extra Large Pro Swivoil Filter Wrench The GearWrench 3944 Extra Large Pro Swivoil Filter Wrench features 180° swivel action, cushion grip dual material handle that provides greater comfort, and stainless and plated steel material band for lifetime corrosion resistance. Also featured on the GearWrench Swivoil Wrench is that it is dimpled for extra gripping power, and is specially designed to fit today’s oil filters.