For sales is one pcs new Australia made  HSS Slab Plain Horizontal Milling Slot Cutter 

Size: (D x H) 3" x 4" 

Slotted bore OD: 1 1/4". 

Helical 6 flutes. LH.

Brand: ESC

Brand new item coated in silicon

Note: Heavy item, pickup welcomed at Wentworthville, NSW 2145.

Toolingstation is an Australia based supplier of taps, dies, drills, endmills, milling cutters and assorted engineering toolings, spring, O-ring, slotted roll pins, and supplies (result of Google's search + gumtree)