It is the unique, patented products.  plastic Adjustable handle with orange button

Adjustable handle SK7015 with plastic   

Black handle with  orange  button 

Clamp handle   adjustable clamping handles

Clamp handle lever with Plastic

SANKQ specialized in manufacturing professional with woodworking machine accessories more than 10years.such as digital position indicator, position indicators, indicators, bakelite handle and knob, lobe ball knobs with brass insert, long knobs,adjustable handle , zinc alloy  adjustable handle ,plastic  adjustable handle ,bridge handle,stainless steel  adjustable handle ,clamping lever handles,industrial handle, pull handle, position gauge,gravity gauge,handwheel with gauge, dial , handwheel , hand wheel with indicators, indexing plunger, universal joints and chains.

Plastic Adjustable handle and thread clamp handle lever with orange button