Features: 
1.The jack stands are of heavy-duty design and high strength legs for truck & bus support. 

2.Spring loaded caster wheels for easy positioning and portability. 

3.Wide range height adjustments are suitable for professional use. 

4.Height adjustment in 1 increment with 4" fine-turning. 

5.JS670 & JS680 are designed with rubber pad which can prevent the truck & bus body from damage. 

6.Rugged steel construction for safe and long life use.