Seventy in total, in two thicknesses — 30 cores at 5 x 25 mm and 40 cores at 2.3 x 25 mm. Both counts and both sizes are printed on the Tenwin MS8313 label.

That depends on the diameter your holder grips, so check it before ordering. Most pen-shaped electric erasers take a 5 mm core and the finer ones take 2.3 mm — this pack covers both, but the length is fixed at 25 mm.

The Mont Marte tool is marked 5 mm on its card and thirty of these cores are 5 mm, so the diameter matches. We have not tested the two together, and length can differ between brands, so treat it as likely rather than guaranteed.

Coverage against precision. The 5 mm core clears a wider path and suits general correction; the 2.3 mm core is for narrow gaps and fine detail where a thicker tip would remove neighbouring lines.

Longer than most people expect, because only the small exposed end touches the paper. Dark, heavily worked graphite wears a core faster than light pencil, but seventy cores is a long-term supply rather than a few sessions.

Not usefully. They are short, narrow cores meant to be held in a powered holder — for erasing by hand a normal block or kneadable eraser is the right tool.

The label is printed in Chinese and Safencia is not putting an English safety or certification claim on it without confirming what the manufacturer's wording states. What we can confirm from the pack is the brand, the model MS8313, the two core sizes and the piece counts.

Yes. Cash on Delivery is available across Pakistan, including Lahore, Karachi, Islamabad, Rawalpindi and many other cities.

WhatsApp confirms stock, selected option, city and delivery charges before dispatch. Delivery usually takes 3-5 working days in major Pakistani cities, depending on courier route and city.