Telescopic Teacher Pointer, Teaching Pointer, Expandable whiteboard Pointer, with capacitive Screen Handwriting Function, Teacher Coach Presenter Pointer, Extended to 39 inches (Black) Black Color:Black Read more Easily Adjust Volume

Read more Easily Adjust Volume Upgraded version with rotary knob

matching with laboratory equipment and all vehicles tires including heavy duty ones

100% SAFE: Hard quality EVA material is Semi-waterproof

it's corrosion- resistant

with wide range of over-current control

Telescopic Teacher Pointer, Teaching Pointer, Expandable whiteboard Pointer, with capacitive Screen Handwriting Function, Teacher Coach Presenter Pointer, Extended to 39 inches (Black) Black Color:Black Read more Easily Adjust VolumeTelescopic Teacher Pointer, Teaching Pointer, Expandable whiteboard Pointer, with capacitive Screen Handwriting Function, Teacher Coach Presenter Pointer, Extended to 39 inches (Black) Color: Black + Orange Size: 39. 37'' Features: 7 axis design, each part is tightly integrated, stable and jitter free, flexible. Robust groove design for stability and reliability. No stretching or shaking during use. Does not hurt the contacts of the screen. The handle