Coloured Soft Knit T-Shirt Rags – Take 3 Bags and get 1 for Free. T shirt material. These are properly cut, compressed,they also go through a metal detector and are clean. No other rag compares to these. Soaks up oil and great for the printing industry, signwriters, painters, panel beaters, commercial cleaners, electronics and marine. Please be aware, sometimes we will give you 20-23 kilos instead for the same price depending on stock.