ProXL Generation 20 2K Fast Universal Hardener is a high-quality hardener suitable for use with 2K clear coats, primers, and solid colours. It comes in a 2.5-litre tin and is ideal for small and time-critical repairs. Its recommended mixing ratio is 2:1, and it provides excellent gloss retention. Designed to cater to various applications, this Generation 20 hardener is also available in Standard and Extra Fast drying speeds.