Hi friends are many various ice cream machines on market. In order to offer you the correct spare parts, please let us know your machine mannequin for replacements spare ingredients affirmation in advance. Thank you. One Long Screw Nut Black Gear Shaped Knob Clamping Bolt Accessory Fitting Ice Cream Maker Soft Serve Machines M8 Or M10 Options: M8 Type or M10 Type Which variety you choose?Please confirm with seller prematurely range is M8 type. Package contains: 1 Piece Long Metal Fastening Nut PS: The screw rod section is randomly straight kind or cone type(upgraded version).