Please read this before placing order. Diameter, Thickness and Weight are as per the standard set by national and international carom federations i.e. 41 mm x 8 mm x 15g (+/-1). Made from Polycarbonate which is 200 times stronger than fiber glass and any other similar material. Ideal for professional & quality carrom striker lovers. Made under the supervision of industry experts to ensure the quality. Slightly curved edge to avoid jumping off the board when play powerful hit.