The ALM Manufacturing QT017 Drive Belt fits: Qualcast (lawnmowers and rakers with grass box at the back mounted on the handles): 

Concorde RE25, Concorde RE25T, Concorde RE25X, Concorde RE30, Concorde RE30DL, Concorde RE30S, Concorde RE30T, Concorde RE30X, Concorde RE35, Concorde RE35DL, Concorde RE35S, Concorde RE35T, Concorde RE35X, Concorde XR25, Concorde XR30, Concorde XR35, System 250, System 300, System 350, CX30
(Green machines with grass box at the back under the handles)

Compares to T41945, T43506, T47169, T44061, F016T41945, F016T43506

Suitable for the following Bosch lawnrakers AMR30, ASM30

 Compares to F016T41945, F016T43506