8mm lathe collets

This lathe collets are sets of holding devices that forms a collar around the object to be held in the proper position. It may be used to hold a workpiece or a tool. 8mm seems to be an industry standart for watchmaker lathes. Price of collet sets differs - used are certainly cheaper, but you can buy new for $2,500 and more. Most important collet sets are:

Rivet 8mm collets

A set of 31 collets, all marked "Rivett", in the wooden box.

Sherline collets

Sherline provides lathes, collets and other watchmaker's props, items:
P/N 2094 Clockmaker's Gearcutting Arbor, 7mm to Morse #1 taper
P/N 2095 Clockmaker's Gearcutting Arbor, 7mm 10mm "D" Collet
P/N 2096 Clockmaker's Gearcutting Arbor, 7mm to 8mm WW Collet
More: sherline lathe.

Cowells collets and lathe

Cowells lathe features:

• Electronic Speed Control
• Sensitive Lever Feed Tailstock
• 60-Division Headstock Spindle Indexing
• 8mm Collet Housing (complete with drawbars) in Headstock&Tailstock
• Long Tee-slotted Crosslide
• Taper Turning Topslide
• Quick Change, Height Adjustable Toolpost
• Tailstock with Offset Capability Carriage Lever Feed(or leadcsrew) Total Portability
• Safety Switchgear
• Handbook & Toolkit
• 5 Year Guarantee