2:1 Shrink Ratio Heat Shrink Tube Kit

A practical, field-proven heat shrink tubing kit built for everyday UK electrical tasks. Constructed from cross-linked polyolefin, it achieves a dependable 2:1 shrink ratio — shrinking precisely to half its marked internal diameter when exposed to controlled heat (typically 90–120°C). Every tube is cut to a consistent 1 13/16 inches (≈46 mm) length. The 560-piece set spans 12 internal diameters: 1/24" (90 pcs), 1/16" (70 pcs), 1/12" (70 pcs), 1/10" (50 pcs), 1/8" (50 pcs), 1/7" (50 pcs), 1/6" (50 pcs), 1/5" (30 pcs), 1/4" (30 pcs), 2/7" (25 pcs), 2/5" (25 pcs), and 1/2" (20 pcs). Colour-coded in yellow, blue, black, green and red for instant recognition and logical grouping. Supplied in a sturdy, reusable plastic storage box with internal sizing guides printed on the lid. Designed for insulation of exposed copper, strain relief at termination points, bundling of multi-core cables, colour identification of signal lines, and mechanical protection of fragile solder joints or crimped connectors. Its smooth outer surface allows clean labelling with fine-tip permanent markers, and its post-shrink resilience withstands repeated flexing without cracking — especially important in portable devices or frequently moved equipment. Widely adopted by UK schools for electronics curricula, community repair cafés for appliance restoration, and tradespeople for quick fixes on consumer units, lighting circuits and security system cabling — all without requiring specialist certification or tools beyond a basic heat source.