DBL Sided Cat Brush Cat Grooming Tool. Double Sided Brush for cats. For the feline Gripsoft Line we are proud to introduce the Double Sided Brush for cats. Tease out snarls and tangles with the Pin Brush and use the bristle side to bring out the shine of the coat. All of JW's grooming tools are specially designed to be ergonomically correct, using less pressure to manipulate the tool. 3 year guarantee.