These are the valve adjusting tool part names and numbers from the 
Honda Service Manual for 1986-87 VFR Interceptors.
Prices are approximate, in US dollars.

Tappet adjustor       07GMA-ML70110    $15
Tappet lock nut tool  07GMA-ML70120    $11
Tappet wrench holder  07GMA-ML70200    $9

And for carb adjusting,

Pilot screw wrench    07908-4220201    $19