TDV6 Discovery 3 and TDV6 Range Rover Sport ModelsThe double opened jaw one fits the viscous fan hub nuts on TD V6 Discovery 3 and Range Rover Sport V6 2.7The second spanner fits on to the 3 bolts of the fan pulley then using both tools you can undo the viscous fanMade from 6mm steel and are zinc plated for a long life finish.The fan spanner also fits Rover V8 4.0 , 4.6 viscous fan nuts, Discovery and Defender Td5 and 300 TDi.The holding spanner's other end also fits Td5 engineLIFETIME GUARANTEE on the spanner set.