Innovative Percussion Vibraphone Mallets DF 30

Got these as a starter set of mallets for vibraphone.
Already being a percussionist these felt great, with a nice rebound and a good absorption of impact. Not too heavy on the wrists, but have a good weight and feel.
My only criticism is that the heads are rather small. This does not affect playing, and would be preferable for 4 mallet playing on most orchestral percussion instruments. Depending on the image you want to go for when playing these may not fit the 'milt Jackson' large head style of playing