COMPRESS. SPRINGS(MM): 10EA: 5.5x17 & 38, 6.5x10, 7 x 12.5&19 12PC 8.5x19 6PC 9.5x16 8PC 9x35 EXT. SPRINGS(MM): 12EA: 4x79.5, 7x51, 8x44.5 & 8.5x47 10EA: 5x20.5, 5.5x25.5, 6.5x22, 7x38, 8x31.5 & 8.5x36.5 8EA: 4.5x44.5 & 8x28.5 IN STRONG POLY CASE CASE QUANTITY-24 NO INNERS FULL PRODUCT DIMENSIONS 23x11x3