These are rollers that used to be employed in the direct traditional finishing (SYNCHRO) when softer skins could not be finished in REVERSE.
Normally the skins (especially the soft ones) stick to the roller and need to be removed manually or with a special skin removing machine.
Nowadays the finest incisions are employed to obtain double tone effects (tipping on embossed surfaces); the bigger incisions for the use of dye on soft goat-sheep skins.
This table is purely indicative. The capacity (in g/ft2) varies depending on the working speed and on the product's viscosity. Increasing the product's viscosity decreases the roller's capacity. The skin preparation is just as important in determining the absorbance and, therefore, the weight of the material deposited.