This product is a hand-mixed filler resin putty, wearing the complimentary gloves to pinch evenly to complete the mixing operation, extremely easy to use. Simply cut an appropriate amount of putty agent, pinch together and it can be cured in about 10-20 minutes and fully cured within 16 hours, with peak hardness after curing. It is perfect for filling and repairing large holes and is ideal for small or emergency repairs. Once set, the epoxy putty bar will have excellent water and oil resistance and will allow for drilling, tapping, machining, grinding, filing and painting