1. Belt size: 7542 330x10 mm, 7546 520x20 mm2. Weight: 7542 about 920 grams, 7546 about 1200 grams3. Number of revolutions: 16000R.P.M4. Air intake thread: 1/4 inch5. Inner diameter of duct: 3/8 inch6. Working pressure: 6.3KGs7. Average air consumption: 150L/MIN8. Scope of application: surface grinding and trimming of aluminum casting products, furniture wood industry, glass steel, metal products, etc.9. Fast speed and high efficiency10. Easy angle rotation operation11. Strong horsepower and safe and energy saving12. Beautiful and practical, strong and wear-resistant, durable and widely applicable13. Aluminum casting products, the surface is polished and trimmed, does not hurt your hands, and has a comfortable gripPrecautions:1. Lubricant needs to be added every day2. Please wear a mask during operation3. Check working pressure4. Regular maintenance or replacement of bladesSpecification: Package Weight One Package Weight 1.00kgs / 2.21lb One Package Size 30cm * 9cm * 6cm / 11.81inch * 3.54inch * 2.36inch Qty per Carton 30 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 30 pcs = 5310 pcs40HQ: 412 cartons * 30 pcs = 12360 pcs