Katok mulching blade (made un USA) 9 m, Odesa region.

The purpose of the roller is to mow and compact the stubble of the predecessor crop to create a mulching cover layer for future zero-technology sowing.
It is especially relevant in arid regions of Ukraine with a moisture deficit.
Main characteristics:

Gripping width, m - 9
The type of aggregation is trailed.
The frame is folding, hydrotreated, 3-section.
The blades on the roller drum are located at a distance of 8" (20 cm) from each other.
Roller rotation from contact with the soil
The shape and direction of the blades exclude the bouncing of the roller.
The main blades of the roller are welded to the drum, and the spare blades can be bolted to the main ones as needed.
Roller cylinder diameter 16” (40 cm)(//tractor-service.com)
Water or other liquid can be added to the inside of the roller for additional weight and to increase its agricultural productivity (75 pounds per foot, 34 kg per 30 cm length)
The weight of the rink without filling with water is ~ 2,400 kg.
Weight of the rink with water filling ~ 3,400 kg.
The cost of a new one in Ukraine (with customs clearance and VAT) ~ $38,000.

P.S. 1
Possible optionsrollers in a hinged version for 3-point linkage
Grips in the spring version - 2.5, 3.2, 4.7 m
Can be installed on the front or rear hitchtractor.

P.S. 2
Possible versions of rollers in the trailed version up to 18 m grip.