I ordered a 5mm and a 4 mm end mill , you sent a 6 mm end mill and not the 5 mm I ordered. Your web site has no option to contact you. Good quality parts but bad follow up options.
used this on a badly made cnc machine of mine (held together with gorilla glue) to cut 4mm 1050H14 plate ... cut it at .2mm at a time and used a squirt of chain lube to keep the swarf out (desperate times ... did a great job considering !!