Specification:
Type: Collet set
Model: ER20
Color: Silver
Material: high-quality spring steel
Shank Diameter: 1/4"(6.35mm)
Accept Shank Size: 1/4"(6.35mm) Shank
ER20-6.5 Collet inside Diameter: 6.5mm, Outside Diameter: 21mm, Height: 31mm.
ER20-8 Collet inside Diameter: 8mm, Outside Diameter: 21mm, Height: 31mm.
ER20-13 Collet inside Diameter: 13mm, Outside Diameter: 21mm, Height: 31mm.

Features:
1. With high precision, smooth cutting, special impact resistance, good wear resistance.
2. ER collets are slotted alternately from both ends, and therefore they have excellent grip on the cutter shank.
3. Eliminate the dangerous temptation of withdrawing the shank from the collet, extend the bit to provide the full depth of cut.
4. For woodworking trimming, milling, drilling, CNC, engraving machine and other processing.

Tips:
1. Before using this tool, please measurement tool deflection, tool deflection accuracy exceeds 0.01mm, please correct before cutting.
2. The tool extends the length of the chuck as short as possible, the tool extends the amount of time longer, if extended, please cut their own speed, feed rate or cutting the amount.
3. If the cutting of abnormal vibration or sound, cut spindle speed and depth of cut to improve the situation so far.
4. Small parts are included, please keep away from children under 3 years old.

Package Included:
1 x Router Collet Extension
2 x ER20-6.5mm
2 x ER20-8mm
2 x ER20-13mm