Dental Equipment Backrest Hydraulic Cylinders Backrest Hydraulic Cylinders Chair Adjustment Smooth OperationBackrest Hydraulic Cylinders, Part Number 8009955A $1.00 Request a Quote System Overview The Backrest Hydraulic Cylinders are used for adjusting the backrest position in various chairs. They offer smooth and reliable performance for optimal backrest adjustment. Standard Features Adjustment for Backrest Position Smooth Operation Durable Construction