ITEM NO: JGAI0702 This tool kit is designed to compress and release valve spring after removing the collets Arched-type steel tube lever ensures a consistent coaxial contact with the valve Includes 5 interchangeable driving adaptors to fit valve springs: 16mm, 19mm, 23mm, 25mm, 30mm Driving adaptors are made of heat treated Chrome Molybdenum Steel 2 Length pressure screws: 50mm & 90mm Ideal to use on cars, motorcycles and small bore engines applications Hand-operated tool kit BLOW CASE: W340 x D195 x H50 (mm)