The Monument GRIP4625 Sink and Tap Back Nut Kit includes 8-13mm monobloc (3240U) and 27x32mm box spanners (319U) for most kitchen and bathroom taps.
Also included is the Shorty Handle Basin Wrench (4357G) and the Grip+ fittings which connect the head of the Basin Wrench to the box spanners. This allows for extended reach, access and leverage for the box spanners.
The kit also contains a 3 prong tool for holding a sink rose/ strainer whilst fitting the waste nut with a 50mm box spanner. Connect the 3-prong Sink Rose / Strainer Grip+ Tool (4527C) and slide the basin wrench through the 50mm box spanner. The sink rose / strainer can then be held in place whilst the box spanner tightens the waste nut.