Sierra International 18-79989 Trailering Sticks for Outboard Boat Engines, Set of 2 Supports Outboard Engine while Trailering and Takes Pressure off the Hydraulic Steering System Strong, Durable and Rugged Aluminum Tubing Two hole sizes Accommodate different diameter Pistons. Fits Over Trim Pistons to Support the Outboard Engine Stabilizer Clips (SeaStar Part Number HYCL-001) should be used in conjunction with Trailering Sticks on Boats with Front Mount Cylinders All Sierra parts qualify for and are covered under Sierra's Industry Leading Customer Satisfaction Warranty Before Ordering, Please Verify this is the Correct Part for your Application. For Assistance, Please Call Sierra's Tech Support at 1-877-663-8396