The basic functions of the ring travellers are to lay yarn on the bobbin under the proper tension, control the ballooning of the yarn, work together with rotating bobbin and front roller delivery to insert twist into the yarn, and act as a differential for the surface speed of the yarn as it varies during formation of the package.

Ring Traveller Combination Normal Type For Normal Profile Ring
Ring L1 HO 1/0 to 20/0, 22/0, 24/0, 26/0, 30/0
L1 UDR 1/0 to 20/0, 22/0, 24/0, 26/0, 30/0
Ring M1 HO 1/0 to 10/0 and  1 to 10
M1 UDR 1/0 to 10/0 and  1 to 10
Ring P1 HWO 1/0 to 5/0 and 1 to 20
Ring M2 HO 1/0 to 5/0 and 1 to 20
M2 UDR 1/0 to 5/0 and 1 to 20
Ring H2 HO 1/0 to 5/0 and 1 to 20, 22, 24, 26, 28 and 30
H2 UDR 1/0 to 5/0 and 1 to 20, 22, 24, 26, 28 and 30
Ring P2 HWO 1/0 to 5/0 and 1 to 20, 22,24, 26,28 and 30
Ring Traveller CombinationElliptical TypeFor Normal Profile Ring
RingEL1 HO1/0 to 20/0, 22/0, 24/0,
26/0, 28/0, 30/0
EL1 UDR1/0 to 20/0, 22/0, 24/0,
26/0, 28/0, 30/0
RingEM1 HO1/0 to 10/0 and 1 to 10
EM1 UDR1/0 to 10/0 and 1 to 10
RingEP1 HWO1/0 to 5/0 and 1 to 12
RingEL2 HO1/0 to 10/0
EL2 UDR1/0 to 10/0
RingEM2 HO1/0 to 10/0 and 1 to 10
EM2 UDR1/0 to 10/0 and 1 to 10
RingEH2 HO1/0 to 5/0 and 1 to 20, 22,
24, 26, 28 and 30
EH2 UDR1/0 to 5/0 and 1 to 20, 22,
24, 26, 28 and 30
RingEP2 HWO1/0 to 5/0 and 1 to 20, 22,
24, 26, 28 and 30
Ring Traveller CombinationUniversal TypeFor Normal Profile, Antiwedge and CR one Flange Rings
RingU1 UL UDR1/0 to 20/0, 22/0, 24/0, 26/0,
28/0, 30/0
RingU1 UM UDR1/0 to 10/0 and 1 to 10
RingU1 CL UDR3/0 to 20/0, 22/0, 24/0,
26/0, 28/0, 30/0
RingU1 C1 UDR1/0 to 5/0 and 1 to 20
RingU2 UM UDR1/0 To 10/0 and 1 to 10