Sealey-AK10115-Telescopic-Bore-Gauge-Set-6pc-Sealey-AK10115-Spring-loaded-plunger-expands-within-the-bore-which-is-then-locked-The-plunger-can-then-be-removed-and-measured-with-a-micrometer-Satin-chrome-finish-Supplied-in-wallet-with-marked-ranges-Sealey-AK10115-Telescopic-Bore-Gauge-Set-6pc