Feature:Function–Injector height tool-Accurately adjust the injector height of the engine; Engine barring socket–Turn over engine, makes adjusting injectors and valve lash easier, It was able to pin flywheel.Material– Durable steel for engine barring socket. Aluminum alloy construction with anti wear property for injector height gauge tool.Package included 2 Tools — 9U-7227 Injector Height Tool, 9S-9082 Engine Barring Socket.This is a non-OEM product,accessory only!Specification:Material: Steel, Aluminum AlloyColor: Red, BlackPlacement on Vehicle: for Caterpillar EngineOE Number: 9U-7227, 9S-9082Injector Height Tool Size: 4.2×4.7×2.2cm/1.65″x1.85″x0.87″(L*W*T)Engine Barring Socket Size: 5×7.1cm/ 1.97″x2.8″(OD»H)9U-7227 Injector Height Tool:Application: Works for Caterpillar 3406E, C-15, C-16Use Instruction:1.