The clamping force is spread over a wider area, which prevents excessive damage on the face of the fixing material. Compatible with zinc/alum alloy, aluminium and galvanised steel. Not for use with stainless steel, brass or copper.
- Large flange primary head.
- Open madrel head.
- Diametre: 3.2mm, Grip: 6.4mm.
- Larger flange prevents pull through.
- A strong, secure form of fastening.
- Suitable for outdoor use.
