15 Tooth 1/2" x 3/32" Freewheel Sprocket. Dicta Brand.
For smaller dia side of flip-flop hubs with a 30 mm x 1.0 right hand threads.
This is also used with our 30 mm x 1.0 adapter.
Can be used on the NuVinci Gear & Chain drive kits to get lower gearing.
We also make a 5/8" ID x 1/2" wide, adaptor for this freewheel Sprocket.
http://www.staton-inc.com/store/products/5_8_ID_x_1_2_wide_Adaptor_for_freewheel_sprocket_13_14_15_tooth_30mm_x_1_0_OD-529-0.html
To find all the types & sizes of adapters - adapter - adaptor - Track Cogs - Lock Rings - Track Cog & Three Prong Sprockets:
Type " FWADP " in the Search box.