COLLET ER40 SET imperial, 23 pieces

ER40, 23 pcs. with hole sizes: 1/8″, 3/16″, 7/32″, 1/4″, 5/16″, 11/32″, 3/8″, 13/32″, 7/16″, 1/2″, 17/32″, 9/16″, 5/8″, 21/32″, 11/16″, 3/4″, 25/32″, 13/16″, 27/32″, 7/8″, 15/16″, 32/31″ and 1″.
Made of high alloy spring steel.
Hardened surface to 44-48 HRc.
Maximum gripping force with 16 jaws.
for hole size under 13/32″ Runout precision of 0.0004″ (Concentricity of 0.0002″).
for hole size above 13/32″mm Runout precision of 0.0006″ (Concentricity of 0.0003″).