This butt pad 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 butt pads. Dimensions: thickness at the central part 15 mm, length 14.8 cm, width 5 cm. Hole diameter 5.6 mm. Center-to-center distance between the two holes: 92 mm. To work on this type of butt pad, it is necessary to use a high-speed grinding wheel and a very fine-grit (400) belt to achieve a very smooth, non-rough finish. Optimal results can be achieved by lubricating with water and gently pressing the butt against the wheel. Gross weight: 53 grams. Made in Italy. HOLES DIAMETER MM 5.6. Weight 56 grammi.To work this type of butt plate it is necessary to use a high speed grinding wheel and a very fine grain belt (400) to obtain a very smooth and not coarse finish. An optimal result can be achieved by lubricating with water and placing the butt on the grinding wheel very gently.