Improved contact and durability Designed for guitarists, each Megaswitch features heavy-duty construction and the best "feel" of all our lever-action switches. All of the contacts are gold-plated, including the contact rotor. The lever is thinner to fit more pickguards and upgraded to steel so it will not break. The circuit board layout makes it easy to customize your sound, and it now accepts standard US-thread screws for retrofitting classic American guitars. E-Model Megaswitch: Extend your wiring options The E-Model Megaswitch allows wiring configurations not possible with a standard 5-way switch, including automatic coil-tapping and special hum-cancelling connections. 12 lugs provide twice the wiring options as previous 6-lug versions. Use these extra lugs for alternative tone control or pickup combinations. Extensive and easy-to-follow wiring instructions are included, with diagrams for 8 different pickup configurations. Each switch includes: 2 chrome screws, 6-32 thread 2 knobs (1 black and 1 white) Wiring diagram and instructions Specifications: Body cavity depth required: 1-3/8" (34.93mm) Mounting screw spacing: 1-5/8" (41.28mm) Lever stem: .048" x .195" (1.22mm x 4.95mm) Pickguard slot required (for the lever): 1/16" x 1-1/16" (1.59mm x 27mm)