ReBore54 — Universal 2-1/8 in / 54 mm Door Lock Re-Bore Guide

For enlarging or re-cutting an existing residential lock cross-bore to the common North American 2-1/8 in (54 mm) size when the normal pilot bit cannot stay centered because a smaller hole already exists. Published geometry used - Cross-bore nominal: 2-1/8 in / 54 mm - Backsets: 2-3/8 in / 60 mm and 2-3/4 in / 70 mm Included - 60 mm body - 70 mm body - 54.4 / 54.8 / 55.2 mm sacrificial guide rings - 54.8 mm FitCheck - STEP + STL + parametric CadQuery source Use 1. Verify your lock maker specifi…

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