Which of the following is a component of the Type IV connector link?

• A. Base plate, 1 aluminium roller
• B. Base plate, 2 aluminium rollers
• C. Base plate, 2 aluminium rollers, 1 locking plate
• D. Base plate, 3 aluminium rollers, 1 locking plate

Answer: (C)

The essential idea here is understanding what makes up a Type IV connector link and why that specific combination provides a secure, load-bearing connection. The base plate serves as the sturdy foundation that everything else attaches to. The two aluminium rollers act as the rolling elements that align and carry the load smoothly, distributing forces evenly and reducing friction. The locking plate is what keeps the assembly from coming apart by securing the rollers in place, preventing any unwanted movement under load.

Having this exact setup—base plate, two aluminium rollers, and one locking plate—gives you a complete, stable configuration that can be reliably secured and maintained during use. Missing the locking plate would risk the connection loosening; using only one roller would compromise load distribution and stability; using three rollers would not match the standard Type IV configuration.