If you have a 940 Rough Terrain Fork Lift or other JCB or Perkins engine with that weird recessed injection pump gear access cover, then short of removing the vehicle cab and welding a nut to the cover so you can unscrew it, this is the only solution. Very few of these tools exist in the world! Not all the JCB dealers even have them. You can rent ours, and not have to spend the outrages cost, or delay in trying to obtain one. Full deposit refunded if tool returned unharmed and on time. Tool rental is $200, with a $500 deposit.