Maximum Contact Surface Area: Each BRT-TOOLS ER Collet features 16 full length slits (instead of
competition’s 8), enabling the collet to collapse uniformly to provide a concentric and full 360˚
gripping surface.
Material: Premium Grade Special Alloy Steel with a high modulus of elasticity. Combined with the 16-slit
design, this material provides full surface contact on the tool when collapsed. Hardness: 44-48 HRC
Inch and Metric Sizes: Choice of Inch and Metric sizes optimizes contact surface area for ultra high precision
applications.