This belt works on a WOOD deck.  This is an OEM (Original Equipment Manufacturer) replacement belt.

Fits Cybex/Trotter Treadmills:

• Cybex Pro+ (530T) Serial# Greater than X07-07530T9814NN
• Sport + (515T) Serial# Greater than X07-07515T9514NN
• Sport (500T) Serial# Greater than X07-07515T9514NN
• Pro (520T) Serial# Greater than X07-07520T9814NN
• Cybex Pro3 (550T) Serial# Greater than C06
• 640CR/700T 
• 645CR/710T
• 685/900T
• 600T
• 640
• 645