◆Foot valve fine structure can be removed as a whole, operation stably and reliably, and easy maintenance ; ◆Mounting head is made of Alloy steel, Lifetime Warranty; ◆Grip jaw is made of Alloy steel , Lifetime Warranty; ◆Simple helping arm, save the operator operating time; ◆Adjustable Grip Jaw(option),±2”can be adjusted on the basic clamping size.