These are the crank and cam tools including seal installers. They are very nice to have and it's certainly easier to do a good job installing seals with the right installer but people figure out ways to get by without them. The silver spanner is for tensioning the scissors gears on the camshafts. If you read the service manual before taking your engine apart and put the bolts through the gears to hold them in their tensioned position then you won't need this tool. The gold spanner is the cam pulley tool so you can correctly torque your pulley bolts and aid in installing the timing belt. People figure out ways of getting by without it. The stuff on the right are the crank tools (actually there's another piece to the crank tool I forgot to pull out) and the seal installers. Again..people figure out ways to get by without.
