These Sandbags conform to the contour of your work piece to provide a base of work surface when forming, chasing, stamping or engraving. Leather with heavy stitching. Great for stamping, chasing and forming these 5" Round Leather Sandbags can be used with or without a bench block. The leather is slip resistant and helps deaden the blow and sound when striking a piece. Size is approximate due to the use of natural material.