Overview Reviews Product Description Clamping CUP for our QCN-40-4 Clamp-nut. Comes with replaceable protective Ring. Product Videos Custom Field Product Reviews Write a Review Write a Review × ShopEquipmentParts brand CUP, Clamping; for QCN-40 Clamp-nuts. QCN-40-CUP Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *