The JZ features a 7A diameter with a long thin neck making it the ultimate jazz stick. The nylon tip provides a brighter, more articulate sound. Shira Kashi Oak is a dense and heavy wood providing a sturdy feel in your hand and excellent ride cymbal articulation. Sticks made of this Japanese Oak are exceptionally durable and usually last longer than other types of wood.
I would put the sound of these more between a stick and a brush; rods are another animal altogether. This medium (7/8" diameter) is perfect for me, as the original 1" size, while nice, wasn't subtle. Haven't tried the small, 3/4" ones, so have no comment. When you play with the O-rings on the ends, you can get all sorts of response from drums and cymbals and for whatever reason, they seem to accompany horn solos wonderfully; better than drums or sticks. Methinks it would be a good idea for the acoustic, jazzbo or oldies rocker to keep a pair on hand and experiment with them.
I love these Shiri-Kashi Oak sticks--especially the smaller Jazz sizes (both wood & nylon tips). They are noticeably heavier and stiffer, which IMHO, make for better head and cymbal responses than hickory and of course, maple. For venues needing a bit more, I keep one pair of 5As about, but hardly ever use them. Nor have I ever managed to break one these oak sticks. True, i play more jazz and oldies, and use decent technique, but a drummer would need to be a basher on PCP to break a 5B... Anyway, that'll be this drummer's 2â‚µ USD on these. Give 'em a try!