Matco Tools Adjustable Oil Filter Pliers. This Tools jumbo oil filter plier features forged construction and a spring-loaded design for heavy-duty torque applications.Size: Adjustable range from 3-3/4 inches to 7-1/2 inches, suitable for medium and heavy-duty truck filters.Design: Forged steel construction for increased leverage and durability.Features: Spring-loaded design allows for one-handed operation.Usage: Specifically designed for servicing large diesel filters, generators, and heavy machinery.