Chain type pull switch. Switch Chain Length: Approx 5cm / 1.9in. Switch Base Size: Approx. 3 x 2.2 x 1.6cm / 1.1 x 0.8 x 0.6in. Material: Engineering Plastic Shell & Copper Components. 1.5mm-10mm Wrench T-Handle Hex Allen Key Screws Screwdriver Driver Tools Set new.