Lee 308 WIN Case Length Gauge is a precise, easy way to trim to length and square the case mouth. Used with the Cutter and Lock Stud or Zip Trim. Trim to length 1.995 to 2.015 inches. Size 308 Winchester Type Case Length Gauge w/Shell Holder Finish Silver Series with Shell Holder Weight 0.07 lbs Caliber 308 Win Function Measure Cases Includes Shell Holder Material Steel Quantity 2 Piece Media Type Brass Shell Media Capacity 1 Shell Compatible With Cutter/Lock Stud