We stock internal sleeves that down-size your taper, and extension adapters that let your headstock handle larger tapers than it is bored to accept. Internal sleeves are knocked out of the headstock like any other taper. Accessories are released from extension adapters with a tapered drift pin. Extension adapters add about 4" length beyond the lathe spindle, and should be used only in conjuction with tailstock support for your workpiece.