Expanding Chucks with strips

They differ from the expanding shafts as they lack journals, 
but have a central hole through which they can be mounted on steel bars or expansible shafts. 

• The central body is made of natural aluminum or aluminum with anodized surface treatment.
• The expandable strips are made of aluminum or rubber-steel.
• The expansion of the strips is achieved by multiple air chambers made of high-strength synthetic rubber.
• The locking onto the underlying shaft is achieved via a clamp integrated into the head.