Conversion Kit consists of a Al7075-T6 MTB freewheel for Shimano (or SRAM) MTB/ROAD 10-11 speed.

Compatible with HUBS with 28T  ratchet ring

Not compatible with cassette SRAM  ROAD 12 speed (need XDR)
Supplied pre-assembled for a quick replacement complete with two bearings, a lip seal, four pawls, four springs and a 1.8 mm spacer for mount 10 speed cassette. 
Compatible with X-Hub SP and SL Disc or ROAD SP a SL hubs with 28 point of engagements (sold until September 2017).
It is not compatible with X-Hub SP and SL Disc or Road SP hubs with 56 point of engagements (sold after September 2017). 
It is not compatible with X-Hub MTB SL made before 2012 (with 15 mm internal axle).
Made in Italy.

ARTICLE:

-XHMSLCKFWXD  (SRAM XD)

-XHRDSLCKFW11 (SHIMANO ROAD 11v)