Adjustable inlet buckles of a snorkel, where the inlet buckle includes a clamping base, two opposite sides of the clamping base are provided with transition notes, the clamping base includes a base block and a limiting element located above the base block, one side of the base block is fitted with a snorkel buckle strap, one end of the snorkel buckle strap is fitted with a guide strap and one inside of the guide edge of the snorkel buckle strap is fitted with clamping teeth at intervals; with a convex limiting part on the upper end of an inner side of the limiting element,the clamping base inside is fitted with a limiting column located in the limiting part and a spring part is attached to the limiting column; where a rotating cover is clamped to the limiting part, a circumference side of an upper end of the rotating cover is fitted with a rotating plate, a lower part of the rotating plate; is fitted with a limitation ring and fitted with limitation arms at the bottom of the limitation ring, shall leap outwards and conform to the convex limitation part; a section on an inner side of the limitation ring below the rotating plate shall be fitted with a rotating column,The rotating teeth are arranged at intervals at the rotating column and correspond to the clamping teeth, a recording point is formed in the rotating column and the limiting column is clamped to the intake point; where a connecting strap is attached from the outside to the clamping base, an end of the connecting strap is clamped with a locking left arm is equipped with a rotating part, an inner sideis fitted with a convex limiting ring at the upper end of the rotating part placed below the rotating plate, with a connecting node at the upper end of the convex limiting part of the rotating part, a convex connecting block is positioned on a circumferential side of the rotating plate and jumps outwards and the connecting node matches the convex connecting block.
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