- Country of manufactureRussia
- Shape of the keyStraight
Cap wrench, it ring, is more perfective aspect of keys, than rozhkovy. Its design is deprived of the main shortcoming of Rozhkov of the keys having only two small spots of contact. The head of a cap key covers all nut and at loading pressure is distributed on all six sides of a nut or a bolt, that is instead of two spots of contact, their six, except that spot of contact are slightly further from corners, all this almost completely excludes smyaty corners. The head of a cap key has the smaller size in comparison with Rozhkov a key for the same nut, and in general it is more convenient to them to work.