Features:
Multi-functional in one, compact and portable, with a square hole and a hexagon in the center.

Specifications:
Size: 71*71*13mm/2.8*2.8*0.51"
Material: Steel
Inner diameter of round hole: 5.7mm,outer circle diameter: 9mm
Side Length of Triangular Hole: 10.4mm,outer circle diameter: 13.6mm
Square hole size: 6.2*6.2mm,outer circle diameter: 12mm
Size of large square hole: 8.3*8.3mm,outer circle diameter: 14mm

Notes:
1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!
2. Please allow 1-3cm measuring deviation due to manual measurement.