This link includes the following products:
1,1 NMRV030 turbine speed reducer
2,1 matching sleeve
This link of worm reducer with shaft sleeve (fit for 8mm motor shaft) but without output worm shaft.
With gear ratio 5:1,7.5:1, 10:1, 15:1, 20:1, 25:1, 40:1, 50:1, 60 :1, 80:1 for customers, Please leave message about the gear ratio you need.
When assemble this reducer with motor, the input motor shaft of 11mm diameter can connect directly. If diameter is 8mm, motor should mount shaft sleeve before fixing with worm reducer.
shaft sleeve
(use for 8mm motor shaft and then assemble with the worm reducer)