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Pentel adds white Ain cases, with six options arriving October 23

The refill case gets a lighter look: two lead diameters, three grades and a ¥220 Japanese price, with a few differences worth checking before buying.

White Pentel Ain lead cases with white mechanical pencils and an eraser on an open notebook
White Ain cases with coordinated stationery in Pentel’s launch photograph. Image: Pentel.

Pentel is giving its Ain replacement leads a white case, with six combinations of diameter and hardness due to reach Japanese stationery shops from October 23. Each case costs ¥220 including Japanese tax.

The October 6 announcement adds white alongside the familiar black case. Pentel’s reason is refreshingly straightforward: people who coordinate their stationery in white or monochrome should be able to match the refill case, too. The change extends the look of a pencil setup to the small item that keeps it working.

Six choices, with a difference inside

Both diameters get HB, B and 2B, but they do not contain the same number of leads. The 0.3 mm case holds 25; the 0.5 mm version holds 40.

All six white Pentel Ain cases, showing 0.3 and 0.5 mm in HB, B and 2B
The complete white-case range. Diameter and hardness stay prominent on the front. Image: Pentel.
Japan: white Pentel Ain cases
DiameterGradesLeads per casePrice
0.3 mmHB, B, 2B25¥220
0.5 mmHB, B, 2B40¥220

Prices include Japanese tax. White-case product codes begin C283W for 0.3 mm and C285W for 0.5 mm, followed by the hardness.

A new color for the existing case

Ain launched in 2023. This release expands its case colors; it does not announce a new lead formulation. The sliding case remains part of the appeal: unlock it with a downward slide, move the top sideways, and take out a lead while holding the case upright.

Pentel’s four-step diagram: peel off the seal, slide down to unlock, open sideways, and remove a lead while keeping the case upright
Pentel’s opening instructions, illustrated with the black case. Diagram: Pentel.

Single cases also come in retail sleeves at the same ¥220 price. Three-case packs cost ¥660, which is simply three times the individual price. Those packs cover HB and B in 0.3 mm, and HB, B and 2B in 0.5 mm; the announcement does not list a three-pack of white-case 0.3 mm 2B.

White Pentel Ain cases alongside individually sleeved cases and three-case retail packs
Loose cases, sleeved singles and three-packs. The packaging options have different grade coverage. Image: Pentel.

October 23 marks the start of a gradual Japanese rollout, so shelf dates may differ by shop. The announcement supplies no US launch date or US price.

Sources: Pentel’s October 6 announcement; full release and price list; Ain product specifications.

Discovery credit: r/sharppencils; details checked against the official sources above.