Stop wasting time guessing bolt sizes — this bolt size identification card lets you check bolt diameters instantly.
Simply slide your bolt through the labelled holes to find the right size in seconds.

✅ Features:

• Covers M5–M24 metric bolt sizes

• Compact and durable – fits easily in your toolbox or pocket

• Made from strong, workshop-grade plastic

• Designed and made in the UK 🇬🇧

• Perfect for engineers, mechanics, and DIY enthusiasts

• Great little gift or toolbench essential

Why choose this gauge:
Accurate, easy to use, and built to last. Ideal for site work, fabrication, garages, and home workshops.

📦 Free UK Shipping – via Royal Mail.