64021Outside Specification:1230MMX145MMX95MM Portable grease kit for kegs of 12/20kgbut complete with follower plate dia. 265mm for drums with inside dia. between 240 and 260mm.64031Outside Specification:1230MMX145MMX95MMPortable guease kit for kegs of 20/30kg. but complete with follower plate dia 310mm for drums with inside dia between 270 and 300mm.