Feature:
【Toughness and Wear Resistant】The O-type collet chuck wrench spanner is made of carbon steel with tensile hardened material. High-frequency hardened and black oxidized treatment with high hardness, the spanner will be long service time.
【Non-Slip Handle】Red rubber covered handle offers comfortable hand feeling, ergonomically design and ensures optimal force-transmission.
【Easy to Identify】The spanners are numbered for easy identification and selection, allowing quick access to the required spanner.
【Complete Specification】There are 5 sizes of the O-type collet chuck wrench spanner to choose from, which is suitable for ER16, 20, 25, 32 or 40UM nuts that can be selected on demand according to the size of the specific nut.
【Annular Groove Design】The ER nut wrench adopts annular groove dentate design. Fix accurately and avoid skidding.

Specification：
Name: O-Type Collet Chuck Wrench Spanner
Material: Carbon Steel,Rubber
Color: Black, Red
Shape: O-type
Mode:ER16,ER20,ER25,ER32,ER40
Overall Size:
ER16:
Total Length: 20cm/7.87in
Internal Head Diameter: 2.4cm/0.94in
External Head Diameter: 5.2cm/2.04in
Handle Length: 10cm/3.93in
Weight: 204g/0.45lb
Thickness: 5.22mm/0.21in

Package Included:
1*O-Type Collet Chuck Wrench Spanner