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SPECIFICATION
01----------12blades metric 0.5--1.75 SAE---40--13
02----------14blades metric 0.4--3.0 SAE---40--8
03----------18blades metric 0.4--5.0 SAE---48--8
04----------20blades metric 0.4--7.0 SAE---48--6
05----------28blades metric 0.2--8.0 SAE---48--4
06----------40blades metric and SAE----0.4-7.0 48-6
screw pitch gauge-Metric and SAE