Jar Arm

1. Ergonmincs

1.1. Must be able to adjust with other hand

2. Material

2.1. High Friction

2.2. Durable

3. Cost

3.1. Under 1000$

4. Operation

4.1. Lightweight --under 5lbs

4.2. Quiet

4.3. Water Proof

5. Safety

5.1. Meet regulations by Gov't.