Sealey vse887 universal single twin camshaft locking holding tool set sealey vse887 p this camshaft locking holding tool set from sealey is designed to retain the timing position on single camshaft and twin camshaft petrol and diesel engines these tools will hold camshafts in position when replacing the timing belt the set will fit closely positioned sprockets on many twin camshaft engines and wider spread camshaft injection pump sprockets on some diesel engines the range of adjustment al