Easily Adjustable ER16 Spring Collars with a Range of Sizes from 1 9 5mm

Size(optional): ER16-1.5mm, ER16-1/4, ER16-1/8, ER16-10mm, ER16-1mm, ER16-2.5mm, ER16-2mm, ER16-3.5mm, ER16-3mm, ER16-4.5mm, ER16-4mm, ER16-5mm, ER16-6mm, ER16-7mm, ER16-8mm, ER16-9.5mm, ER16-9mm. Special angle groove increases rigidity.

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