BlueSpot 200 PCE Assorted Springs Set. Ideal for use around the home or garage. Includes handy carrying case for quick and convenient storage. Contains 200 assorted springs. Package ContentsCompression 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). Extension Springs - 4 X 79.5mm (X12), 4.5 X 44.5mm (X8), 5 X 20.5mm (X10), 5.5 X 25.5mm (X10), 6.5 X 22mm (X10), 7 X 38mm (X10), 7 X 51mm (X12), 8 X 28.5mm (X8), 8 X 31.5mm (X10), 8.5 X 36.5mm (X10), 8 X 44.5mm (X12), 8.5 X 47mm (X12).