Key, 5x16 mm

The dimensions are spot on for the R8 spindle, and the key slid in without any filing needed. Much better than trying to reuse the worn original.

The 5x16 mm key fit perfectly into the spindle assembly on my mini mill, no wobble at all. It’s a solid metal piece that feels just like the original part I was replacing. Glad I found this exact size.

Was a little nervous about getting the exact match for the R8 spindle, but the 5x16 mm dimensions are spot on. Slid right into the slot on the mini mill and the spindle is solid again, no wobble at all. Just wish it came with the other two keys in a set, but this one does the job perfectly.