Paper with excellent grinding power and durability. 1 box of 5 [Use] Paper for belt sander 12 x 330. Features: Excellent grinding power and durability. Specifications: Size: 0.5 x 13.0 inches (12 x 330 mm). Grit size: 400 5 pieces per box; Material: Synthetic fiber. Thermoset resin. Aluminum whetening material. Product Size: Width 5.9 x Height 1.6 x Depth 0.5 inches (150 x 40 x 12 mm); Weight: 0.7 oz (20 g); Product Code: 4954425901175; JAN Code: 4954425901175; Brand Name: NCA; Product Name: 5 Endless belt; Standard: A-4000 belts.