The Apex 3/16" hex bit — the one grips actually ask for by name. Genuine Apex S2 steel with a 1/4" hex shank, impact rated, so it drops into your impact driver, drill, or 1/4" drive handle and holds up to real torque without rounding out.
The 3/16" hex is the workhorse size for socket head cap screws on grip and camera hardware — cheese plates, dovetails, rigging accessories, and more. Standard bits come in packs of 5, 10, 15, or 25 — stock the cart, the truck, and every tape bag in the department.
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Standard (1-5/16"): everyday insert bit for drivers and bit holders — packs of 5 to 25
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Long Reach (4"): gets into recessed and hard-to-reach hardware