This stock is made of expanded technopolymer, meaning it consists of an internal structure of micro air bubbles that maintain their shape under compression without expanding or deforming laterally. Weight is 50-60% lower compared to rubber or gel stocks. Dimensions: thickness at the central part 21 mm, length 14.8 cm, width 5 cm. Hole diameter 5.6 mm. Distance between the centers of the two holes: 92 mm. To work on this type of stock, it is necessary to use a high-speed grinder and a very fine-grit belt (400) to achieve a very smooth finish without roughness. Optimal results can be achieved by lubricating with water and placing the stock on the grinder very gently. Gross weight: 67 grams. Made in Italy.width 5 cm. DISTANCE BETWEEN THE TWO HOLES: MM 92.