Material: UV-stabilized plasticscrew-onSuitable for: Tape up to 40 mmsuitable as line insulator and tape tensionerSlat-shaped rubber inserts on both sides, together with the patented 'clip' operating principle, guarantee reliable, non-destructive tape holding.The insert prevents the ribbon from slipping and protects it from damage. The toothing above the rubber insert prevents the ribbon from slipping.patented