The Sip 4 X 36" 120 Grit Fine Sanding Belt Is Manufactured For Heavy-Duty Use In Woodworking Applications Whether Domestic Trade Or Industrial. Ideal For Belt And Combination Sanders. • 4" X 36" 120 Grit Heavy-Duty Fine Sanding Belt • Ideal For Belt And Belt/Disc Combination Sanders • Manufactured For Heavy-Duty Woodwork In Every Environment Including Domestic And Trade UsePTDSIP07740"