The starter base collar is connected at one of the many bases i.e., base plate, screw jack or swivel jack and provides a base rosette to begin Scaffold construction.

Use: screw a starting base for a scaffold. It has an adjustable height to allow for compensation on uneven levels, so that a level scaffold is always attainable. Any scaffold base should always be placed atop mudsills that are on proven solid ground.
Standard Hollow Galvanized Screw Jack used in Cuplock and Ringlock Scaffolding.

Use: screw a starting base for a scaffold. It has an adjustable height to allow for compensation on uneven levels, so that a level scaffold is always attainable. Any scaffold base should always be placed atop mudsills that are on proven solid ground.
Standard Hollow Galvanized Screw Jack used in Cuplock and Ringlock Scaffolding.

The screw jack is used as a starting base for a scaffold where the supporting surface of the scaffold is on a slope. This Galvanized Swivel Base Jacks is the standard screw leg for Cuplock and Ringlock Scaffolding.

Adjustable U-Heads are used for supporting the beams in concrete slab support.
Scaffolding U-Head is sometimes referred to as Fork Heads