Specifications:
Name: ER11 Collets
Material: High Grade 45 Carbon Steel
Color: Silver
Total height: Approx. 18mm
Outer diameter(Max): Approx. 11.5mm
Gripping Range: 1MM to 7MM (1mm,2mm,3mm,4mm,5mm,6mm,7mm)
Fits metric shank size(s): For example,1mm Collets Fits 1mm metric shank,2mm Collets Fits 2mm metric shank

Features:
-Made of high grade specially formulated spring steel
-Hardened and precision ground
-Built in self-Release design and tools will never get stuck in holder
– Widely used, boring, milling, drilling, silk attack, sculpture, CNC, and other processing.
– Use with any standard ER collet chucks for coolant-thru tool applications.
– Each collet is well packed in separate protective container with label.
Name:ER11A 5mm Extension Rod
Height: 38 mm(when the lock nut)
Material: Special quality steel,high hardness
Shaft Hole: 5 mm (+0.02 mm) the need to install heating expansion
ER11A Nut: Outside hexagonal nut 19 mm maximum overall diamete

Package includes:
1 x ER11A 5mm Extension Rod
7 x ER11 Collets