ITEM NAME:3/4" to 1" inch Gas Engine Pulley Crank Shaft Sleeve Adapter Predator w/Step Key Descriptio n Description: Changing Motors With Different Diameter Axes, Changing Belt Pulleys At Different Speeds, Reducing The Need To Purchase New Motors Or Pulleys To Maintain Existing Components And Speed/Power Requirements. Adapt The Larger Wheel Hole To The Small Shaft And Work With The Pneumatic Crankshaft To Enlarge The Crank Diameter To Accommodate Pulleys, Gearboxes, Etc. Specifications: Material: Iron Color: Silver Size: 5.8cm*25cm Model: AP17 Matching Relationship: Applicable Package Included: 1* Crankshaft Sleeve Adapter Note: 1.Due To The Manual Measurement And Different Measurement Methods, Please Allow 2-3mm Deviation. 2.Please Be Reminded That Due To Lighting Effects And Monitor'S Brightness/Contrast Settings Etc, The Color Tone Of The Website'S Photo And The Actual Item Could Be Slightly Different. We offer you what you need! 3/4" to 1" inch Gas Engine Pulley Crank Shaft Sleeve Adapter Predator w/Step Key.1 Crankshaft Sleeve Adapter. We'd like to settle any problem in a friendly manner. Material: Iron. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted.