ITEM NAME:Car-Accessory Shaft Key Pulley Adapter Bushing Sleeve Sheave-Key Car-Modified Descriptio n Description: *100% brand new and high quality *Made of high quality material, durable and practical to use *The metal bushing accommodates crankshafts from 5/8" to 3/4" in diameter with a 3/16" key holder *Replaceable motors with different diameter axes *Can change the pulley to change the speed or belt *Reduced the need to purchase new motors or pulleys to maintain existing components and speed/power requirements *Adapt larger wheel holes to smaller axles *Used with the crankshaft of the gas engine to expand the crank diameter to fit the pulley, gearbox, etc. *Easy to install and easy to use Specifications: Material: Iron Color: Picture Color Size: 6*6*7.5cm Applicable Models: General Package Included: 1 * Sleeve 1 * Sleeve Keyway Slot Note: 1.Due to the manual measurement and different measurement methods, the actual size could be slightly different. 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! Car-Accessory Shaft Key Pulley Adapter Bushing Sleeve Sheave-Key Car-Modified.Can change the pulley to change the speed or belt. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted. Adapt larger wheel holes to smaller axles. 1 Sleeve Keyway Slot.