ER Collet, ER-25, 3/8 in.: Router Collets: Amazon.com: Tools & Home Improvement
MABUARN ER Spring Collet ER11 ER16 ER20 ER25 Set with Plastic Case for CNC Lathe Engraving and Milling Tool Workholding Chuck (ER25 20PCS) - Amazon.com
ER25 9PCS High precision 0.008 spring collet +1PCS MT2 or MT3 or MT4 ER25 Morse tool holder + 1PCS ER25 wrench Lathe Turning-Tool Threading Holder (Size : MTB3-ER25(9PCS)) - Amazon.com
Amazon.com: Accusize Industrial Tools Metric Er Collet 2 mm to 16 mm by 1 mm Er-25 Collet 15 Pc, 3350-0584 : Tools & Home Improvement
ER25 Collet ER Collet Chuck ER25 Collet High Precision 0.008 1mm-20mm ER25 Spring Collet High Precision Collet Er25 Collet Set (Color : AA 0.008, Size : ER25-8.5) - Amazon.com