Whoa-Stop Cylinder Stroke Control SegmentsA more positive alternative to cylinders with hydraulic depth control mechanisms.Whoa-Stops provide a greater range of control, require less maintenance, are more reliable, and are far less expensive.Learn More Model 9899Wadler Model 9899 is designed for use with cylinder shaft sizes ranging from 1.128” to 1.50”. Learn More Model 9697Wadler Model 9697 is designed for use with cylinder shaft sizes ranging from 1.75” to 2.00”. Learn More Model 96Wadler Model 96 is identical to Model 9697 except for the wings, making it ideal for close clearance applications. Learn More