The Hydrajaws M0095 Long Stroke Roofing Screw Tester Kit determines the strength and suitability of fixings in built-up roofing constructions where performance data is unavailable. The long stroke of 80mm means that once tested the fixing can be completely extracted. Maximum tensile load 25kN (5620lbf).

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The large area of the tester base reduces the pressure on fragile roofing materials to prevent damage. At a load of 10kN the pressure is less than 1N/mm2.