17 mm ID LEFT HAND 1.375 x 24 Adaptor for freewheel sprockets .9" wide 2 set screws and 4 mm keyway.
 
NOTE:  If you need the larger 6mm key way cut you MUST add this item to your cart and we will re cut the
key way to the larger 6mm key or to the 5mm key way.

Re cut Key way to larger size

These have a Drill Dimple in between the two set screws noting they are 1.375" x 24 LEFT HAND THREAD.

The 4 mm key is NOT included.

Note:  These have a 20% restocking fee and you pay S & H fees both ways.  Most of the time (95%) you do not need a Left hand freewheel adaptor on a shaft or jack shaft.

They are used to turn - screw / thread on to the HUB of a bicycle or scooter hub - wheel as with our Staton-Inc custom CNC machined hubs.

These are CNC machined out of 12L14 Steel and Zinc Plated.