Review on TECHNIKS SUPER PRECISION COLLET ACCURACY Industrial Power & Hand Tools and Workholding by Jose Mcdaniel

Having used many other inexpensive ER32 collets made in China, this collet has surpassed itself in overall workmanship, fit and runout. The collet had no burrs, well polished inside and out, well marked. The concentricity is better than 1/1000 millimeter. Clamping force is excellent. worth your money.