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Position of Keyway
Defender Security - Bore Adapter Rings Items per page:  
  
U 9529 - Bore Reducer (3 rings) Reduce from 2-1/8" to 1-1/2" or 1-1/8
Adaptor rings used to reduce the entry knob bore from a standard 2-1/8" to 1-1/2" or 1-1/8", brass plated steel.