ALPINE S2 SERIES 4" COMPONENT SPEAKER 2-WAY 45W RMS PAIR 390510BL Smallest Inner Diameter of tool

Smallest Inner Diameter of tool : 5mm

Depths are measured by a 6 (150 mm) steel rule

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Asada Dies Alloy 1In - 2In Bspt

ALPINE S2 SERIES 4" COMPONENT SPEAKER 2-WAY 45W RMS PAIR 390510BL Smallest Inner Diameter of toolNewly redesigned and Hi Res Audio Certified, the Next Generation S Series S2 S40C 10cm (4) Component Speakers offer a new standard in entry level sound performance. We packed supreme capability into these speakers by using highly effective materials and proprietary design elements. The lightweight woofer cone, crafted from a combination of polypropylene, glass fibre, and mica materials, serves up the essential high output low distortion sound required