Ali Industries Do it Best Premium Sanding Belt. Resin over resin locks in the zirconium oxide grain for maximum life. Lasts up to twice as long as aluminum oxide belts. Extra-heavy cloth resists tearing. Flush-joined belt will run both directions to double life of belt. 2 per package. No. 380458GA: Belt Width: 3 In., Belt Length: 18 In., Grit: 120, Type: Heavy-Duty, Abrasive Material: Zirconium Oxide, Pkg Qty: 2, Package Type: Hang Tag No. 380466GA: Belt Width: 3 In., Belt Length: 18 In., Grit: 80, Type: Heavy-Duty, Abrasive Material: Zirconium Oxide, Pkg Qty: 2, Package Type: Hang Tag No. 380636GA: Belt Width: 3 In., Belt Length: 21 In., Grit: 120, Type: Heavy-Duty, Abrasive Material: Zirconium Oxide, Pkg Qty: 2, Package Type: Sleeve No. 380644GA: Belt Width: 3 In., Belt Length: 21 In., Grit: 80, Type: Heavy-Duty, Abrasive Material: Zirconium Oxide, Pkg Qty: 2, Package Type: Sleeve