Use these metal, 10 sided "keys" to remove the casebacks used on some classic timepieces. Older models by Benrus and others had the ten-sided back design which required these special openers. Set includes eight sizes measured across, flat to flat side: 18.2, 20.9, 22.9, 23.9, 24.9, 27.2, 29.2 and 32.0mm.
- Set of eight openers ranging in size from 18.2to 32.0mm
- Ten sided
- Made of metal
- Overall length is 5-7/8 inches (148mm)