These are all sold separately to paint. With two pack products you must use the correct hardener and follow the correct mixing ratio. We also advise using the specified thinner as they are blends of organic solvents specially formulated to go with HMG's products. We would not recommend using standard thinners.
If you have any technical queries please contact us. If we think you may require a hardener or some thinners we may also contact you when we receive your order.