Extracted from Wikipedia ......
Sizes and variations[edit]
Opinel knives are currently offered in eleven numbered sizes: 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, and 13. The No. 1 Opinel was discontinued in 1932.
[13] With its tiny 2 cm (0.787-inch) blade and boxwood handle, it was meant to be attached to a key fob or watch chain and used as a tobacco pipe cleaner
[13][14] or nail cleaner,
[14] but was judged to be too small.
[13] The No. 11 Opinel was discontinued in 1935, its size being considered too similar to Opinels Nos. 10 and 12.
[13]
With its 8.5 cm blade, the No. 8 Opinel is perhaps the most widely used size, though Nos. 4, 6, and 10 are consistent sellers. There is a considerable difference in size between No. 12 (12 cm blade) and the recently-added novelty No. 13,
Le Géant ("the Giant") with its 22 cm blade. There is now a No. 7 round-ended knife without the sharp point, intended for children and others as "My first Opinel".
A variety of different Opinels have been offered over the years. A few are sold more for their novelty value than for practical purposes, such as
Le Géant. Besides the
Slim Effile series and the
Couteau du Jardin, Opinel also offers a hawkbill-bladed pruning knife designed for use in the garden or vineyard, and a large folding wood saw with locking blade using the same
Virobloc mechanism as found on large Opinel knives. For the kitchen, the company sells vegetable peelers, chefs knives, paring knives, knives with corkscrews (
couteau tire-bouchon), and prep knives for the kitchen, including a mushroom knife (
couteau à champignon), with an integral boar's hair cleaning brush.
[13] In 2014, Opinel released again new varieties of knives for cooking.
[15]