Our g8988 -Inch paddle-Inch type switch is a direct replacement for our machines and many others. with its removable safety -Inch key-Inch and large easy to hit paddle it is one of the safest switches you can have in your shop. if space is a problem the g8989 keyed safety switch has all the features as the g8988 except it does not have the large -Inch paddle-Inch. the g8992 -Inch snap-in-Inch magnetic safety switch with sealed buttons and -Inch spade-Inch type terminals is the perfect replacement or upgrade switch. the g8991 is the same as the g8992 but includes a mounting faceplate. the g8990 is similar to the g8992 but has a higher amperage capacity. mounting size: 7/8-Inch x 1 1/2-Inch 110/220v 10 amps.