Up for bid is an unused Shimano SLX M660 Front Derailleur.  It is model number FD-M660-10 and is a clamp type mounting. The specs for this unit are:

Product                Shimano SLX M660 Front Derailleur

Riding Type:  Cross Country, Trail

Speeds: 3x

Diameters          

Mount Types     Seat Tube Clamp

Pull Type              Dual Pull

Swing Action      Top Swing

Top Gear Teeth                42 Tooth

Miscellaneous   3x10-Speed

Model Number(s): FD-M660-10 (Clamp),  Series SLX

Maximum Capacity: 18 Tooth

Top-Middle Minimum Capacity: 10 Tooth

Chain Line: 50mm

Chain Stay Angle: 66-69°