2 New Old Stock GROBET USA 6 Flt CHATTERLESS COUNTERSINKS 1/2" X 2" 100 Deg Threadwell The pair is parallel to

The pair is parallel to + or - 0

Scroll is made of fine quality alloy steel and carefully case hardened

2-38mm range

Atlas or Hardinge etc

6" long nose pliers

2 New Old Stock GROBET USA 6 Flt CHATTERLESS COUNTERSINKS 1/2" X 2" 100 Deg Threadwell The pair is parallel toTwo New Old Stock GROBET ( a manufacturer of premium quality tool and diemakers tools) USA 6 Flute CHATTERLESS COUNTERSINKS 1 2" diameter X 2" long (100 Degrees Compound Angle) 3 8" Shank . The countersinks are new old stock perhaps from the 1960's or 70's the Angle is stamped as 50 Degrees which is an older way of stating the angle, today most companies even Grobet express the compound angle formed at the peak or head of the countersink which in this