Sprindex Adjustable Rate Coil Spring, 55x126mm - 610-690lbs Shorts/Pants - Left-hand mounted bells allow

- Left-hand mounted bells allow for thumb ringing and right-hand mounted bells allow for index finger ringing

- Durable aluminum body single action pump with T-handle

Manufacturer Part Number: 223S

Manufacturer Part Number: 51CC-12

UPC: 036121151017

Sprindex Adjustable Rate Coil Spring, 55x126mm - 610-690lbs Shorts/Pants - Left-hand mounted bells allowAdjustable base spring rate by changing the length of effective coils Includes spring, adjuster, and 5 Delrin performance adapters that allow the spring to spin while compressing and also adapt to a variety of shocks on the market Coil is made of super high tensile spring steel similar to "lightweight" springs (which is why Sprindex is lighter than regular springs) in order to handle the stress of the system when adjusted to its highest spring rate