Disposable Bottle Adapter- Connect 1lb Propane Tank to Gas Grill Steak Saver Made by AZ Adapter- Lifetime Warranty. Allows for hook-up to a 1-lb. (0.45 kg) fuel cylinder. Connect your gas grill to a 1lb disposable propane bottle. Save dinner by continuing to grill with a 1lb bottle when your 20lb tank runs out. Bulk tank adapter.