Bessey SPZ60K Roofing Rafter clamp SPZ 600/120, BE181009 - Clamping force up to 12,000 N. For all roofing and timber frame constructions. SPZ 80 K with 17 mm hexagonal bolt and heat-resistant pressure plate with sintered steel insert, which can be tilted up to 35¡. Hammer-in tip, First of all, the tip is driven into the rafter. The clamp is then quickly closed, to allow you to start right away with powerful clamping. Broad impact surface, The broad impact surface makes it easier to drive in the clamp.