This is a replacement speed potentiometer for a Weslo Cadence DL15 treadmill. Model Number: WLTL41580. Part Number: 129640. Fits the following models: NordicTrack, Powertread - NCTL79061, Powertread - NTTL79060, Powertread - NTTL79061, Proform, 325 - PETL32570, 325 - PETL32571, 385 C - PFTL39191, 425 - PCTL93070, 625 EX - PFTL62580, 625 EX - PFTL62581, 625 EX - PFTL62582. Weslo, Cadence 1005 - WCTL30570, Cadence 1005 - WCTL30571, Cadence 1005 - WLTL30570, Cadence 1005 - WLTL30571, Cadence 1005 - WLTL39090, Cadence 1005 - WLTL39091, Cadence 1005 - WLTL39092, Cadence 1005 - WLTL39093, Cadence 1005 - WLTL39094, Cadence 1015 - WLTL41570, Cadence 1015 - WLTL41571, Cadence 200cs - WCTL19010, Cadence 200cs - WLTL19010, Cadence 200cs - WLTL19011, Cadence 200cs - WLTL19012, Cadence 200cs - WLTL19013, Cadence 200cs - WLTL19014, Cadence 200cs - WLTL19015, Cadence 2219 - WLTL22190, Cadence 2219 - WLTL22191, Cadence 250 DR - WLTL25010, Cadence 340cs - WLTL29010, Cadence 340cs - WLTL29011, Cadence 340cs - WLTL29012, Cadence 340cs - WLTL29013, Cadence 340cs - WLTL29014, Cadence 630 - WETL21020, Cadence 630 - WETL21021, Cadence 630 - WETL21022, Cadence 630 - WETL21023, Cadence 715 - WCTL71560, Cadence 715 - WETL71590, Cadence 845 - WLTL84540, Cadence 845 - WLTL84560, Cadence 845 - WLTL84561, Cadence 845 - WLTL84562, Cadence 845 - WLTL84563, Cadence 910 - WETL91070, Cadence 910 - WETL91071, Cadence 910 - WETL91072, Cadence 920 - WETL21100, Cadence 920 - WETL92060, Cadence 920 - WETL92061, Cadence 920 - WETL92063, Cadence 920 - WETL92064, Cadence 920 - WLTL92060, Cadence 920 - WLTL92061, Cadence 920 - WLTL92062, Cadence 920 - WLTL92063, Cadence 920 - WLTL92064, Cadence 920 - WLTL92065, Cadence 927 - WCTL90060, Cadence 927 - WCTL90061.30 Days Warranty.Date First Available: September 3, 2010. Best Sellers Rank: #335,450 in Sports & Outdoors. Customer Reviews: 4.7 out of 5 stars 6 ratings 4.7 out of 5 stars. : B0041T013W. Part Number: ?350. Manufacturer: ?Treadmill Doctor. Brand Name: ?Treadmill Doctor. Package Weight: ?1 Pounds. Item Package Dimensions L x W x H: ?2 x 2 x 2 inches.