A device (1), a sinker means (5) and a method for loop -forming are claimed. The device (1) comprises: • a cylinder (2) with first grooves (3) for needles (4), - which are accommodated in a first groove (3), - whereby the needles (4) comprise a loop forming section, • a sinker ring (27) with second grooves (15) for sinker means (5), whereby the sinker means (5) comprise: - an actuating section (12), - a loop forming section (7), - whereby the loop forming section (7) comprises an opening (11), - and whereby the sinker means (5) are accommodated in one single second groove (15). New and inventive is that the opening (11) is delimited in the width direction (x) by two side faces (23) and in that the loop forming section of the needle (4) is movably disposed between the two side faces (23) of the opening (11).