Really useful both in the workshop and in the paddocks this little case contains 125 rubber grommets with varying sizes to help you cover all eventualities ! Size indications : mounting diameter x internal diameter (mm) 15 grommets : 3.18 x 6.35 10 grommets : 5.57 x 7.94 7 grommets : 7.14 x 12.7 3 grommets : 12.7 x 15.08 6 grommets : 9.53 x 11.91 5 grommets : 9.53 x 12.7 3 grommets : 7.94 x 14.29 3 grommets : 9.53 x 20.64 4 grommets : 11.11 x 19.05 3 grommets : 15.88 x 24.61 2 grommets : 19.05 x 23.81 20 grommets to drill : 7.14 20 grommets to drill : 9.53 10 grommets to drill : 12.07 5 grommets to drill : 15.88 4 grommets to drill : 19.05 3 grommets to drill : 22.23 2 grommets to drill : 25.4