This car oil filter has 1/2 inch(12.5mm) square mouth design, suitable for use with twelve angle square wrench(included), very convenient. 15pcs in a set, the specification marks are clear and easy to distinguish, and can be used according to actual needs. You can choose according to the inner diameter and the number of flutes, easy to change machine filter oil, suitable for a variety of car models. Features: 15pcs in a set, the specification marks are clear and easy to distinguish, and can be used according to actual needs. You can choose according to the inner diameter and the number of flutes, easy to change machine filter oil, suitable for a variety of car models. 1/2 inch(12.5mm) square mouth design, suitable for use with twelve angle square wrench(included), very convenient. The inner wall surface design of polygonal dome can increase the bite ability of oil filter wrapped, which is a perfect fit to remove filters and filter housings. Easy application, uniform design, no deformation, can cope with small spaces. Comes with a plastics box for convenient storage and easy to take out with you. Specifications: Name: Oil Filter Wrench Set Material: metal+plastics Package size: 370 * 260 * 100mm / 14.57 * 10.24 * 3.94in Package weight: 1760g / 3.88lb Packing List: 1 * Oil Filter Wrench Set