American Sun USA made 5/8" end mill Holder 6" Extension MOD-913-4 Made in UK Low-profile design fits into tight

Low-profile design fits into tight spots for close-quarters cutting

A - Opening (mm): 500 ( about 18")

Straight Shank

The packages are marked with the date of 1978 when they were made

The tapered shank has a few specs of oxidation or discoloration  as can be seen in the photo

American Sun USA made 5/8" end mill Holder 6" Extension MOD-913-4 Made in UK Low-profile design fits into tightAmerican Sun Inc USA made (a small American firm that made the highest quality tooling) 5 8" end mill holder 6" extension , Item No. MOD 913 4 Extends end mills for hard to reach areas use for single or double ended end mills Precision ground to assure concentricity Manufactured in the US. This top of the line tool is for all CNC or standard milling machines, manufactured of high quality alloy materials, heat treated to 60RC and precision ground for