Amazon.com: EVERSPROUT 1.5-to-3 Foot Telescopic Extension Pole | Lightweight Sturdy Aluminum Handle | Easy to Use Flip-Tab Lock Mechanism | Twist-On Metal Tip Works for Squeegee, Duster, Paint Roller (Pole only) :
Telescopic Pole - 4-8' H-1920 - Uline
Homemade/DIY Telescoping Pole From EMT (Electrical) Conduit : 3 Steps - Instructables
Cleaned by Pete: what a power washer does: Extension or Telescoping poles: the locking system