This Jet Kit Fits YAMAHA 1982 XJ1100J  Maxim Mikuni Carburetor. Stock size
You get Whats In Photo. (notice this type of pilot jet does not have the bleed holes in the side)

This kits includes a set of 4 stock Pilot Jets (#47.5), a set of 4 stock size Main Jets (#112.5) 

Stock size is for motorcycles with stock engine and with stock air intake and stock exhaust system .

Jet kits are easy to install  but does require some basic carb tuning knowledge. 

You will need to refer to you shop repair manual for carb removal and jet installation.