Features STEEL MATERIAL: Made of durable 1/4 inch thick steel, these wrenches have strong strength and durability, as well as good corrosion and rust resistance. EASY TO USE: Simply slip the tool into the air hammer, select the correct wrench size for the fan nut, and a couple of bumps of the air hammer will loosen the fan clutch. Easily removes and installs fan clutch when repairing water pump or fan clutch. No STRONG COMPATIBILITY: This wrench set is compatible with for General Motors. Suitable for 4.3 liter, 5.0 liter, or 5.7 liter general pickup trucks or SUVs. EASY CARRYING: Comes with small sizes and a storage bag, you can easily carry these wrenches to the places you need to use. 7PCS WRENCH: There are 7 pieces wrenches in the package that you can use them respectively to meet your different needs. Specification: Item Type: Pneumatic Fan Clutch Wrench Kit Mode: 43300 Material: Steel Compatible with for General Motors Package List:7 x Wrench 1 x Accessory 1 x Storage Bag  Note:Please ensure the correct size before purchasing. Package List 7 x Wrench 1 x Accessory 1 x Storage Bag