ALAMSCN MAX7219 Dot Matrix Module 32x8 4 in 1 LED Display Modules for Arduino Raspberry Pi Microcontroller with 5Pin Wires Green (Pack of 2) auspowers_batchone They are used for covering

They are used for covering the threaded fastener like bolts/screws for the scratch-free result

Material Certified: Carbon Steel 1035

Has a super magnetic base

Head Diameter : 11

ALAMSCN MAX7219 Dot Matrix Module 32x8 4 in 1 LED Display Modules for Arduino Raspberry Pi Microcontroller with 5Pin Wires Green (Pack of 2) auspowers_batchone They are used for coveringALAMSCN MAX7219 Dot Matrix Module 32x8 4 in 1 LED Display Modules for Arduino Raspberry Pi Microcontroller with 5Pin Wires Green (Pack of 2) Features: 1. 10MHz Serial Interface 2. Individual LED Segment Control 3. Decode No Decode Digit Selection 4. 150A Low Power Shutdown (Data Retained) 5. Digital and Analog Brightness Control 6. Display Blanked on Power Up 7. Drive Common Cathode LED Display 8. 24 Pin DIP and SO Packages Parameters: 1. A single