Heli-Coil Inserts are packaged according to thread size for easy handling and display.
The insets are contained in a sturdy, clear, plastic display box and marked with part number and thread size.The length of the inserts in inch and metric packages is 1-1/2 times the diameter of the bolt.6/Pk
Heli Coil R3745-12 Insert M12x1.5 x 18mm Length
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