Tinksky 6pcs Magic Ball Rack 9 and 10 Ball Billiard Pool Cue Accessory (Black) Color: Black. Material: Plastic. Dimensions: approx 21.5 * 19 cm. Thickness: about 0.1 mm. Make sure to place a perfect sphere and save time. Loss of tablecloth. Suitable for use of pool hall and individual. Applicable for placing 57mm Nos. 9 and 10 ball.