Are the rings also Aurigan on the 68 Euro kk ?
Because of the shortened lozenge the roof of the mouth does not get any pressure applied to it. The angle of the lozenge has been turned by 45 degrees, which causes the lozenge to lie flat aginst the tongue when the reins are taken up, without causing pressure points.
Because of the way the lozenge has been turned the rein aids will get through more precisely.You can order the bit in two thicknesses, 14 and 16 mm - in bit sizes 11.5 cm to 14.5 cm (one inch is 2.54 cm) The bit is made of Aurigan and the rings are made of stainless steel.