2PCS CNC Router Vise Low Profile Aluminum Toe Clamp 
Features:

For  Woodworking & Metalworking Projects
The adjustable screw and U-slot provide a 51.6 mm range.
Includes M6 screws and M6 nuts for easy installation on aluminum spoilboard with M6 holes and T-track tables.
Stay below the surface; these low-profile CNC router clamps keep the entire engraving material area open and safe.
Suitable for T-Track Table, Hybrid Table, MDF/Aluminum Spoilboard 

Specifications:

Type: Vise Toe Clamp
Color: ‎Silver
Material: ‎Aluminum
Size: 106x22x15mm/4.2×0.9×0.6 Inch
Weight: 71g/pcs
Max Adjustable Distance: 51.6mm

Package List:

2 x Vise  Toe Clamp