Check the listing for details. Hydraulic Log Splitter Cylinder Rebuild Seal Kit For 4.0"bore X 1.75"rod Cylinde. Condition: New. Listed at 15.95 USD. Please make sure your model matches the description,remove and measure your cylinder to compare with each item specification.1. Cylinder tube Bore (I.D.) 4.0" x rod (O.D) 1.75". Please note some cylinder rod head OD size is not rod size.2. Wear rings. Piston wear ring : 101.6 mm ( OD 4") x 95.25mm (ID 3.75") x 9.53mm (0.375" wide), Nylon Rod wear ring : 44.5mm (ID 1.752") x 50.8mm (OD 2”) x 9.53mm (0.375" wide), Nylon3. Piston seals 1 square ring and 1 O-ring. Piston Square ring: D101.6 mm x91.6mm x 3.28mm; O-ring (installed under the square ring): 91.0 mm x 2.65 mm . CPU + NBR4. Rod O-ring (item 13): 44.5mm x 54mm x 5mm, CPU. There is O-ring inside.5. Rod dust ring (Item 12): 44.5mm x 54mm 5.5mm /7.3mm, TPUBelow is 4.0"Bore x 1.75" rod cylinder Specification that OEM made by this seal kit: Retracted (center to center between rod mountain hole and clevis hole: 32.4” Extended (center to center same as above): 56.4”Stroke: 24±0.05”Dimension from center of clevis hole to back face of cylinder: 2.95” Dimension from center of rod end hole to front face of rod: 1.06” Dimension from center of rod end hole to front face of cylinder: 1.18” Ports: 1/2" NPT Dimension from portto port: 25.4”Rod: 1.75" rodRod end mountain hole: 0.55”Clevis Mountain hole: 1.16”Dimension between mountain clevis to clevis: 0.87”Thickness of each mountain clevis: 0.375”Length of each mounting clevis: 4.125”On Oct 9, 2023 at 14:23:43 PDT, seller added the following information: