Sanwa OBSC-30 Clear button Transparent style button. Sanwa is regarded as one of the best arcade parts maker. High Quality Japanese built Sanwa OBSC-30 Snap-in Arcade button. Very quiet click operation. Requires 30mm Hole. Complete with high quality Sanwa Microswitch Perfect for Xbox 360/PS3/PS2 Controllers and arcade machine which demand the highest quality parts. Additional Product Information: Snaps on each side, locks the button in place and have a non-clicking microswitch. These can be mounted in material with a thickness of 2 to 4mm (0.08 - 0.16 inches) .110 Size microswitch lugs.