Perfect grip control. Always stays in shape and does not over-stretch or snap like similar mechanisms with wire. Directly appealing mechanism for maximum working comfort. Made of high-quality plastic, reinforced with glass for increased durability. Reliable grip even with difficult objects. Opens up to 10 cm wide and holds weights up to 4.5 kg. Comes even in narrowest spaces, 360 rotating gripping head, locking. et all 90 Stable and rustproof. Lightweight, protects the arm and back.