NOW as the title says i need help as I cannot think of the name of the subject matter as I tryin to buy some for my tiger now the gadget is a metal ring with different size holes in the centre an a allen grub screw fitted in it so that it can be fitted over a shaft an the allen grub screw is tightened up so it wont slip an I thought they were called collets but when I looked collets up it was not what i wanted can anyone HELP
chris
chris
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