Hot Racing ESC303F01 Cooling Fan for the Castle Sidewinder and Axial AE2 ESC Made by Hot Racing; Hot Racing is a United States based company; parts are sourced from Chinese producers All Hot Racing upgrade parts are direct replacements for stock components; additional parts are not required Hot Racing part number ESC303F01; UPC 083745713039 This item works with: Associated RC-10 B4.x, RC-10 T4.x, SC-10 2WD, SC-10 4x4; Axial AX-10 Deadbolt, AX-10 Ridgecrest Crawler, EXO 4WD Terra Buggy Kit, SCX-10 II, SCX-10 Scale Truck, Wraith 4WD Rock Racer RTR, XR10 Crawler; HPI Electric Blitz; Losi 1:10 Strike, 1:10 TEN-T Nitro Truggy RTR, 1:10 TLR 22 2WD Buggy; Traxxas Rustler VXL Velineon Brushless, Rustler XL-5, Slash 2WD all versions, Slash 4x4 all versions, Stampede 4x4 VXL, Stampede Electric, Stampede VXL, Stampede XL-5