Bison Hollow Power Chuck - 3 Jaw - 2405-K-SGM Series - 250mm Tiny Tool Holders With a strict ISO H5

With a strict ISO H5 tolerance

Exact BSF 3/4 x 12 Right‑Hand GO gauge: Quickly verify external thread diameter against the Go limit

Stock warnings refer to blanks ready to begin manufacture

The M2 HSS core resists wear during repeated reaming

aligning with busy workshop schedules

Bison Hollow Power Chuck - 3 Jaw - 2405-K-SGM Series - 250mm Tiny Tool Holders With a strict ISO H5The Bison Hollow Power Chuck 3 Jaw, 2405KSGM Series, 250 mm diameter delivers dependable, throughhole workholding for precision turning and milling. Designed for shops and engineers who demand accurate, repeatable clamping and fast setup, it holds round parts securely while enabling throughhole access. Its plain back design requires an adapter to mount on machines that need one, but it remains compatible with Kitagawa jaws for a familiar, modular