On/Off/On Rocker Switch. Hole Size: 20mm. This is for a single on/off/on switch. Body Material: Polyamide. Details can be found at the top of the page.
eBay
KCD4 Rocker Switch 4 Pin 2 Position DPST On Off Black Mini Boat Rocker Switch 20A 125VAC 16A 250VAC Snap-in Square Toggle Switch
Aliexpress UK
Optional waterproof cover. Switch Markings: 6A 250VAC, 10A 125VAC.
eBay
FILN on Off 30A/250V Heavy Duty 4 Pin DPST Sealed Waterproof T85 Auto Boat Marine Toggle Rocker Switch IP67 with LED 12V 220V
Aliexpress UK
Female Crimp Spade Connectors. Round = 20mm. Add to Favourites.
eBay
3 Way Bilge Pump Rocker Switch Panel Manual/Off/Auto Waterproof IP66 20A 12V/24V LED Light SPDT Momentary for Marine Boat Yacht
Aliexpress UK
Designed for easy connection and disconnection of a DC 12V 10A circuit. The rocker switch panel includes a 20 mm (0.8") mounting hole and a keyhole slot to prevent rotation during installation. Long Service Life.
eBay
AC 250V Vintage Ceramic Toggle Switch Brass Lever Rocker Retro ON OFF Wall Switch Classical Lamp Switch
Aliexpress UK
The illuminated switches require 12VDC or 230V (indicated in the variations). Panel cut-out: 19 x 13mm.
eBay
Gold On/Off 16A AC Flame Retardant 250V Crystal Tempered Glass Panel Wall Rocker Switch 1 Gang 1 Way Button Light Switch Switch
Aliexpress UK
Easy setup. All you need is a 3/4"(19mm) hole and the switch will sit in nicely;no more square cut outs. Volt: DC 12V. Light color: Blue LED light. Type: 2 Pins (3 Pins with LED). If you do not receive our reply within 48 hours, pls.
eBay
EIOMR EU/UK Standard Light Wall Switch 16A 250V 2 Gang 1 Way /2 Way Rocker Switch Large Panel Luxury Wall Key Recessed Switch
Aliexpress UK
• Universal 12V Switch: Made of durable plastic and high-quality copper for excellent conductivity, safety, and stable performance. • Compact and Convenient: Water drop-shaped switch with a comfortable grip, small size, and long lifespan.
eBay
Self Reset/Self-locking Rocker Switch 2/3/4/6/8/9/12Pin Copper Pin Toggle Switch High Current 32A 250VAC Power Button Switch
Aliexpress UK
[Pre-wired Cable]: 0.5M red + black prewired for trouble-free installation. [ON-OFF Push Button Switch]: Push ON / Push OFF. [Double-Sided Tape]: Strong double-sided tape for paste-type installation.
eBay
WESA Mirror Acrylic Black Wall Rocker Switch Vintage Flame retardant Panel Button Wall Light Switch 1 Gang 1 Way On/Off AC 250V
Aliexpress UK