Diffeomorphisms of 4-manifolds from degree one graspers

We relate degree one grasper families of embedded circles to various constructions of diffeomorphisms found in the literature -- theta clasper classes of Watanabe, barbell implantations of Budney and Gabai, and twin twists of Gay and Hartman. We use a ``parameterised surgery map'' that for a smooth 4-manifold X takes loops of embeddings of S¹ in the manifold obtained by surgery on some 2-sphere in X, to the mapping class group of X.