This is a brand new oil exchange kit manufactured by Kitaco company in Osaka, Japan.
It fits ultra clutch cover from the brand.
Designed for many minibikes, Monkey, Gorilla, Monkey 125, Dream 50 etc...
Complete kit including filter and gaskets.
Brand new in pack.
Here are several technical informations from manufacturer:

DESCRIPTION
COMPLETE REPLACEMENT SET WHEN EXCHANGING ENGINE OIL FOR SPECIFIC MODEL.
A SET OF OIL FILTER, SEALS & DRAIN GASKET.
NO WORRIES ABOUT OIL LEAKAGE ANY LONGER.

REMARKS
○PACKING LIST
 OIL ELEMENT:H-02
 DRAIN WASHER:12x20x1.5
 FILER CAP O-RING:OH-01
 FILER COVER O-RING:EXCLUSIVE PARTS(390-1083705)

APPLICATION
DREAM50
AC15 ALL MODEL
●THE FOLLOWING KITACO PARTS\
ULTRA CLUTCH KIT FOR MONKEY / GORILLA
ULTRA CLUTCH COVER KIT FOR APE
CLUTCH COVER KIT FOR GROM