Use: Clamps through the bed joint on Internal corners with use of 40mm, 50mm or 50.8mm profiles Clamp length: 175mm Bar thread length: 80mm - with RHINOGRIP thumbscrew to allow clamp to be securely fixed to profile Material: Zinc plated steel for superior corrosion resistance Designed and manufactured in Britain using only the highest quality materials, our range of bricklaying tools are made to last.