YMT Hydraulic Log Splitter Cylinder Rebuild Seal Kit Fit for 50 Bore x 20 Rod Cylinder 11 Pcs/Set YMT Hydraulic Log Splitter Cylinder Rebuild Seal Kit, Fit for 5.0" Bore x 2.0" Rod Cylinder , 11 Pcs/Set Universal Fitment -- Widely fit for Hydraulic Log splitter cylinder tube Bore (ID) 5" x rod (OD) 2", please note some cylinder rod head OD size is not rod size. All Included Kit -- Come with 11 pcs of seals in total to rebuild a hydraulic Log splitter cylinder. Specifications Nylon Piston wear ring: 127mm (OD 5) x 120.65mm (ID 4.75) x 9.5mm (0.375 wide), Nylon Rod wear ring: 50.8mm (ID 2) x 57.15mm (OD 2.25) x 9.5mm (0.375 wide), Piston Square ring: 127mm x 117mm x 3.28mm (CPU), Piston O-ring (installed under the square ring): 115mm x 2.65mm(NBR), Rod O-ring: 50.8mm x 63.5mm x 5mm(CPU), Rod dust ring: 50.8mm x 60.3mm 5.5mm /7.3mm(TPU), Gland O-ring: 118mm x 5.3mm(NBR), Rod and piston assembly O-ring: 32mm x 2.65mm(NBR). To Know the Fitment -- Please do some measurement on your cylinder and compare with each item specification to know whether this kit fits your cylinder. Please dont hesitate to contact us if you are not sure about the fitment. Premium Quality -- Made of premium materials and employing precision manufacturing techniques, this seals kit will absolutely rebuild your hydraulic log splitter and service for an extended period of time. Satisfaction Guarantee -- YMT aims to provide excellent products and best service for customers. You can simply return it if you are not satisfied with the product. We support 30 days full refund for return and 12 month warranty. Due to the lighting effects and shooting angles, there is color difference in the product, please understand. Due to manual measurement, there is tolerance in the product size.