M16 15.5mm. 1/8"BSP 9.5mm. 1/4"BSP 13mm. 3/8" BSP 16mm. 1/2"BSP 20mm. 3/4"BSP 25mm. Product use: non-toxic, odourless, high temperature resistance, suitable for fixing threads. Material: translucent PP material, white PE material, are food grade, the pad is silicone soft pad.
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