Barbed Chain can be used in many configurations:

Prickle chain diamond control aggression and adjustable angle with 2-way action (double work single pass). It can be used as a separate tool or attached to the back of a cultivator.
With the attachment of a small seed drill, it can be used to accurately and quickly team any seed with excellent germination and emergence.
As a Prickle Chain Attachment. This can be attached to a cultivator or a combine harvester drill, etc. It is a rear V with an attached center boom post. It is lifted and folded by machine.
An Ace Prickle Chain Back Loop. This is a simple loop that drags behind a tool. It has a lower cost for basic needs.

With the sowing of the Seeder 500, using the diamond bi-directional action action, any seed can be sown from clover to pod seeds Front chain section mixes the middle bar to seed ready soil with rear chain coating seed lightly provides ideal germination conditions for early growth.