Sliding Pocket Knife from Kalke Cement. Material: plastic, metal. Size: 1/2" W. x 3 1/2" L. x 1/2" W. x 3/16" D. Description: maroon plastic case holds small, sliding steel blade; spring lock button controls blade movement; gold lettered on case side: "Kalke Cement Block & Tile, New Richland, Minnesota.