Adjustable shoulder strap. Long crank handle. Very simple to use. EASY TO USE- Hand-operated bag seeder and spreader works for various seeding jobs. SMOOTH OPERATION- Oscillating shut-off plate prevents clumping and aids in flow control. PERFECT SIZE-Zippered top for easy filling and closure while holding up to 25 pounds of seed. COMFORTABLE-Contoured molded base and adjustable shoulder strap make it comfortable to wear. Nylon bag. High Speed Crank.