Includes carrying case for quick and convenient storage. Contains 200 assorted springs. Contains 200 assorted springs. Compression Springs – 5.5 X 17mm (X10), 5.5 X 38mm (X10), 6.5 X 10mm (X10), 7 X 12.5mm (X10), 7 X 19mm (X10), 8.5 X 19mm (X12), 9.5 X 16mm (X6), 9 X 35mm (X8).