Genuine OEM Kawasaki new old stock. No label. 
I believe this fits models below but please make your own check. 
Note- there are variants of this shaft with slight differing oil hole position(s) so do compare with your existing worn part.

Z650 Z650 B1 B2 C1 C2 C3 D1 D2 D3 D4 CSR E1 F1 H1 H2 H3 CSR LTD
Z750E KZ750 E1 - E2 - E3
Z750G
Z750H H1 - H2 - H3 - H4 KZ750 LTD CSR 
Z750L-3
GPz750 R1 1982

POSTAGE-  Sent worldwide. Non trade seller.

Combined postage reduction: Buy but do not pay. Wait and I will work out new postage and send you a new invoice. Then you pay.

Questions? I always reply.