GRS 003-021 MagnaBlock Only (No Attachment) Earrings Used as the upper roll

Used as the upper roll — pair with a flat lower roll

Multiple sizes available to suit a range of chain weights and styles

25 is a heavy-duty

30 mm in diameter

15) in a single set

GRS 003-021 MagnaBlock Only (No Attachment) Earrings Used as the upper rollGRS MagnaBlock (003 021) is a premium, heavy duty engraver's block engineered for stability, precision, and longevity. Two industrial ball bearings plus a large roller thrust bearing eliminate looseness over the life of the block. Hardened steel jaws use an exclusive rebuildable thread system, and the satin finish stainless body with black jaws helps reduce glare and eye strain. At 30 lb (13. 7 kg), MagnaBlock offers rock solid support for engraving,