Thank you for looking. This is a simple repair agent for solar resin surfboards (epoxy). WAHOO SOLAREZ EPOXY Made in USA [Size] 2.0oz (57g) [Curing Time] 5 minutes [Finish] Clear I purchased this to repair an EPS surfboard. I thought the smaller 14.2g size would be sufficient, but I bought the larger 57g size and used it for repairs. I no longer own EPS surfboards and currently have PU surfboards, so I am selling this Solar Rez. The sandpaper is also unused and will be included as is. There is still more than half remaining, so I believe it is a good deal. This is a used item that has been opened. Thank you for your understanding.