Feature●PERFORMANCE:The Gauge Body with Bushing kit can improve the accuracy of measuring bottlenecks, extends brass life.●PACKAGE INCLUDE:Gauge Body × 1 ,Bushing × 5●DESIGN:The Gauge Body with Bushing kit is made of high quality Aluminum Alloy.The small screws on the comparator body can be adjusted to fix the bushing.●HOW TO USE: Add the neck diameter and shoulder diameter and divide that number by 2, use the bushing that is closest to that number.●PQY CUSTOMER SERVICE:If you have any problem ,please contact us and we will reply in 24 hours except weekends and holiday.Description