This switch SPST ON/OFF isn't an 1:1 direct replacement. It does not fit perfectly into the hole of the TS-9 series pedals and more. Although the switch does not snap in it fits in the pedal securely and tightly. Switching is 100% reliable. The advertised solution is absolutely road tested.
Used in the Ibanez 9-series effects pedals (e.g. TS9, AD9, etc). Size: 12x12x7,3mm.