Hornady Lock-n-Load 5pc Bushing Set for Headspace Gauge. The Hornady reloading tool measures variations in your brass before and after firing or re-sizing. This set of reloading equipment is a collection of five bushings that attach to the body of the Headspace Gauge providing the ability to check most bottleneck cases from .17 Rem through the belted magnums. The Hornady Head Space Gauge Five-Piece Bushing Set features Ackley Improved chambers which use the same bushing size as the parent case. Hornady has included .330" .350" .375" .400" and .420" bushings in the accessory pack. Use your Headspace Gauge on almost any cartridge when you use the Hornady 5-Bushing Set for Headspace Gauge. Hornady Five Piece Headspace Gauge Bushing Set REQUIRES the Headspace Gauge body for proper use. Specifications for Hornady Lock-n-Load 5pc Bushing Set for Headspace Gauge: Manufacturer: Hornady Color: Silver Features of Hornady Bushing Set ONLY for Headspace Gauge: Set of bushings for the Hornady Headspace Gauge Includes a total of five bushings Includes .330" .350" .375" .400" .425" bushings for most firearms REQUIRES a Headspace Gauge body for use Package Contents: Hornady Lock-n-Load 5pc Bushing Set for Headspace Gauge Hornady HK55P: Lock-n-Load 5pc Bushing Set for Headspace Gauge