I'm selling the Kress spindle I used with my MDF CNC router. This spindle probably has a maximum of 8 to 10 running hours, and no problems.

Included are 4 collets (4mm, 6mm, 6.35mm, 8mm)

Also included is a homemade 43mm spindle mount, which has an embedded laser diode to make machine zeroing and centering a simple task.

Kress 1050 FME millling / grinding spindle for CNC, with collets and mount | eBay