Provides a comfortable grip to hold your cases during case trimming and beveling sessions. Install into all popular priming tools that accept Auto Prime shell holders, including the Lee Auto Prime Tool and Auto Bench Prime (priming tool sold separately).This adapter allows you to quickly cut brass to the appropriate length or bevel the inside and outside of the case neck and quickly move on to the next piece of brass. This new adapter greatly improves the speed of switching between each piece of brass. It is no longer necessary to loosen the knurled shell holder between each piece of brass.Use in conjunction with Case Length Gauge, Knurled Case Holder, Locking Pin Cutter, and Chamfering Tool. Weight: 25 grams. Pipeline in USA.