Heavy duty drop feed and walking foot lockstitch sewing machine for manufacturing polyester lifting slings & cargo lashing strap (Ratchet Tie Down), safety belts, buffing wheels, container bags, jeans, sails, luggage, traveling bags, tents, awnings, seats, car upholstery, boat trimmer, bouncy castle, boat covers, saddle, harness, horse rugs, carpets, shoe, footwear and general canvas work etc.