Lee 35 WHELEN 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 2.474 to 2.494 inches. Size .358 Diameter Type Case Length Gauge w/Shell Holder Finish Silver Series with Shell Holder Weight 10 oz Caliber 35 Whelen Function Measure Cases Includes Gauge/Holder Material Steel Quantity 2 Piece Media Type Brass Shell Compatible With Cutter/Lock Stud