• MT Taper is produced according to AT3 specifications
• Made of Alloy Forged Steel for a long durable service life
• Holders have four mounting holes with the thread 5/8-11 on a 4” bolt circle to hold 8” or larger face milling cutters
• Shell end mill pilot T.I.R. <0.0004”
• Holders have 1” drive keys
• Draw Bar Threads:
NST 40 5/8”- 1
NST 50 1” – 8
NST 60 1-1/4”- 7