It is a tester for checking compression on the diesel engines for cars and trucks. Whether in a shop or a home garage, this durable tool kit is designed to last Dual scale pressure gauge. Reading ranges from 0~1000psi or 0~70kg/cm2. Accurancy: +/-2%. Including many different size adaptors for many car models. Such as Compatible with VW, AUDI ,BMW, VOLVO,MERCEDES-BENZ, FORD, MAZDA, NISSAN,TOYOTA, PEUGEOT AND SO ON. Designed to be reliable and precise, this tool assists in making tests and checks more efficient and hassle-free. Comes in a hard shell case for more convenient storage and transport, helping you keep track of every piece and organize the entire kit. It is a tester for checking compression on the diesel engines for cars and trucks. Whether in a shop or a home garage, this durable tool kit is designed to last. Dual scale pressure gauge. Reading ranges from 0~1000psi or 0~70kg/cm2. Accurancy: +/-2%. Including many different size adaptors for many car models. Such as Compatible with VW, AUDI ,BMW, VOLVO,MERCEDES-BENZ, FORD, MAZDA, NISSAN,TOYOTA, PEUGEOT AND SO ON. Designed to be reliable and precise, this tool assists in making tests and checks more efficient and hassle-free. Comes in a hard shell case for more convenient storage and transport, helping you keep track of every piece and organize the entire kit. Includes: Pressure gauge+ air release button + rubber hose+1/8”NPT quick coupler M10X1.25 LONG ADAPTOR M10X1.25 SHORT ADAPTOR M10X1.0 SHORT ADAPTOR M12X1.25(F)-7/16”-20(M) adaptor x3PCS 7/16”-20(F) adaptor x3PCS M12X1.25(F)- M18X1.5(M) x2PCS 1/8”(M) quick adaptor Quick connect with ball tip 7/16”-20(M)-7/16”X20(F) 900 Connector 1/8”(M)-M24X1.5(F) 1/8“(F)-M24X2(M) 1/2”-19 lock nut Adaptor sleeve