Extreme duty design to handle the heavier springs found on mid- and some full-size truck strut assemblies. New frame includes cross bracing at arm mount locations - standard, this eliminates frame flex when compressing heavier springs. 2:1 reduction gearbox - standard. Allows for a 2:1 torque compression increase when compressing struts. Lock rings to hold arms in position - standard. This eliminates arms from spreading or sliding when compressing offset or unique strut configurations. Four-point locking jaws securely hold the spring in place. Open-ended design means you can take the strut in and out, quickly and easily. The arms adjust in and out, up and down, to accept many sizes of springs. (2-1/2 to 10 diameter) (2-1/2 to 24 vertical stroke) Extra long 3-bar handle gives user the leverage needed to compress heavier strut springs. No need to change shoes for different size springs. Easy to transport while mounted on stand. Product Dimensions: 43 ??