This instrument is used to test the folding performance of the safety insole, and a part of the middle part is fixed to hold the insole. From the clamping part 70mm (the front end of the shoe pad), two fixed rods are used to clamp the test piece, and the fixed bar can do reciprocating winding around the clamping place.

GB /T 20991-2007、ISO 20344:204、EN 12568