Lee 7X57 MAUSER 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 2.215 to 2.235 inches. Size 7x57 Type Case Length Gauge w/Shell Holder Finish Silver Series with Shell Holder Weight 0.07 lbs Caliber 7x57mm Mauser Function Measure Cases Includes Shell Holder Material Steel Quantity 2 Piece Media Type Brass Shell Compatible With Cutter/Lock Stud