Allows you to remove the oil filter from cars/vans, etc., without damaging it. Using the spring-loaded extension design, it allows for quick and easy removal and installation of oil filters. For use with tools with a 1/2" (12.5 x 12.5 mm) square drive. Adjustable from 80 mm to 105 mm. Holds up to half the filter for a better grip, reducing the risk of slipping or damaging the filter. Unlike other oil filter wrenches (2- or 3-arm models), this wrench can hold up to half the filter for a better grip, reducing the risk of slipping or damaging the filter if it is stubborn.