25 pieces of USA-made commercial-grade heat shrink tubing in a 6-hole labeled plastic drawer — 6-inch lengths pre-sorted by diameter so you can cut to the exact size needed for each application without waste. Commercial-grade wall thickness is the difference between tubing that seals correctly under heat and thin-wall imports that crack during shrinking — this kit uses tubing built to hold up in demanding automotive and electrical environments.

What's Included

Commercial-grade heat shrink tubing — multiple diameters, 6" lengths
Made in the USA — consistent wall thickness, reliable shrink ratio
6-hole labeled plastic drawer — one diameter per compartment, pre-sorted
QR-coded layout included
25 pieces total

Specifications

Material	Polyolefin (standard heat shrink)
Length per piece	6 inches
Shrink ratio	2:1 (standard)
Origin	Made in the USA
Grade	Commercial — thick-walled, crack-resistant
Total pieces	25
Storage included	Yes — 6-hole labeled plastic drawer

Best For

Automotive wiring repair shops — heat shrink tubing protects splices and terminal crimps from moisture, abrasion, and vibration; commercial-grade wall thickness holds up in under-hood and underbody environments
Marine and RV electrical work — moisture-exposed wiring requires properly shrunk tubing that seals without cracking; thin-wall imports often split under heat, leaving the splice exposed
Electrical contractors and panel shops — heat shrink on wire ends and splice points is a professional finishing standard; the 6" lengths provide enough coverage for most termination and splice applications
Fleet maintenance operations — wire repair is routine maintenance on commercial vehicles; having multiple diameters organized in a drawer means technicians grab the right size without measuring against loose tubing

Heat Shrink Tubing Sizing Guide

Heat shrink tubing is sized by its recovered (shrunk) diameter and the supplied (pre-shrink) diameter. Standard 2:1 tubing shrinks to half its supplied diameter when heated. To select the right size:

Measure the outside diameter of the wire, connector, or object being covered
Choose tubing with a supplied diameter larger than the object OD — it needs to slide over before heat is applied
Confirm the recovered diameter is smaller than the object OD — it needs to grip tightly after shrinking

Example: For a 14 AWG wire with a ~0.10" OD, 3/16" (0.187") supplied diameter tubing will slip on easily and recover to ~0.093" — snug against the wire.

Apply heat evenly with a heat gun, working from the center outward to avoid air pockets. Avoid open flames — they char the tubing surface and cause uneven shrink. Questions about sizing for a specific application? Contact us.

Shipping & Ordering

Ships within 1–2 business days from our warehouse
Volume pricing available — save up to 20% when ordering 3 or more
Reorder regularly? Ask us about a B2B account with a quarterly restock cadence and custom pricing — contact us

Heat Shrink Assortments

25 Piece Commercial Grade Heat Shrink Tubing Assortment Starter Kit