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The PB-124 25 x 50 x 100mm Tri-Block from Suburban Tool is a solid, no-holes setup block that puts three precise reference dimensions into a single tool for layout and workholding.

Machinists reach for a tri-block when they need dependable reference faces for setups, squaring, and inspection on the surface plate or in the vise.

  • Three reference dimensions — 25, 50, and 100mm — in one block
  • Solid no-holes design for clean, uninterrupted faces
  • Supports layout, setup, and workholding on the surface plate
  • Handy reference for squaring and inspection tasks
  • Offered as a Hot Buy from Suburban Tool
  • Made in the USA by Suburban Tool

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