This is NOT a collet. It is a ‘step down’ adapter that fits inside a 1/8″ collet and allows the use of smaller, 1/16″ shank size accessories. No need to change handpiece collets.
Micro chuck with 3/32″ shank allows the use of smaller shank accessories without having to change handpiece collet. Ideal for use with 1/16″ shank friction grip burs in 3/32″ (2.35mm) collet handpieces.