Sure grip bushings

Sure-Grip® L Series flangeless bushings feature quick disconnect functionality that provides easy installation and removals. Contact us for further details. Are easy to install and remove. They are split through flange and taper to provide a positive clamp on the shaft. Cap screws and lock washers are provided with each bushing to securely fix the bushing to the shaft. Bushings have a gradual taper (3/4-inch taper per ft). QD style sprockets will have a letter built into the part number and in the product view you will find the required bushing to use. We also have Inch QD Bushings for most Metric sized shafts.

Source: https://www.silentsync.com/inch-qd-sure-grip-l-series-flangeless-bushings