(E14) 9.6" Amp Handle Strap for Guitar Amplifiers Speaker Cabinet,Deluxe,Black the measurement for center to center of the mounting holes is about 8.5", minimum 7 1/4" to maximum 9 1/8". This Well made amp handle is very durable made of Tempered Steel and Rubber for handling an amp Up to 75KG 2 screws are included. Our Heavy Duty versions amp handle. For Guitar amplifiers or your speaker cabinet/ amp project