This is a Replacement Slide Roller Part Number 259956 Used on the Following Models Listed below.   

FreeMotion-
e5.1 - SFEL920090
e5.3 - SFCW817070
e5.3 - SFCW822070

Lifestyler-
Crosswalk - 831.297230

NordicTrack-
A.C.T. - 831.238780
A.C.T. - 831.238960
A.C.T. - 831.240321
A.C.T. - 831.308010
A.C.T. - NTCW909070
A.C.T. - NTCW909071
A.C.T. - NTEL089110
A.C.T. - NTEL710140
A.C.T. - NTEL713120
A.C.T. 10 - NTEL714140
A.C.T. 10 - NTEL714141
A.C.T. 10 GW - NTEL716150
A.C.T. 7 - NTEL713123
A.C.T. Classic - NTCW507070
A.C.T. COMMERCIAL 7 - NTEVEL150160
A.C.T. COMMERCIAL 7 - NTEVEL150161
A.C.T. COMMERCIAL 7 - NTEVEL15518-CH0
A.C.T. COMMERCIAL 7 - NTEVEL155180
A.C.T. Elite - 239000
A.C.T. Elite - 239001
A.C.T. Elite - 239002
A.C.T. ELITE - 831.239001
A.C.T. ELITE - 831.239002
A.C.T. ELITE - 831.239003
A.C.T. PDM - NTCW909072
A.C.T. PDM - NTCW909073
A.C.T. Plus - NTEL199110
A.C.T. Plus - NTEL716120
A.C.T. Plus - NTEL716122
A.C.T. Pro - NTEL012990
A.C.T. Pro - NTEL012991
A.C.T. Pro - NTEL012992
A.C.T. Pro - NTEL716123
A.C.T. Pro - NTEL912110
A.C.T. Pro - NTEL912111
A.C.T.COMMERCIAL - NTEL710141
A.C.T.COMMERCIAL - NTEVEL130160
A.C.T.COMMERCIAL 10 (GW) - NTEL716152
A.C.T.COMMERCIAL 10 - NTEL718170
A.C.T.COMMERCIAL 10 - NTEL718171
CANADAEL NORDICTRK A.C.T. - 24032C0

Proform-
14.0 MME - PFEL580150
16.0 MME - PFEL599150
16.0 MME - PFEL599151
480 Space Saver - PFEVEL750080
Crosswalk 8.0 - PFCW507070
GR 80 - 831.215210
GR 80 - PFEX19953

Reebok-
T 9.85 ES - RBCW909080
V 1000 - RBTL11910

Weider- 
220 W - WEBE99780