can make inner dia : 25.5mm ,25.9mm ,30.5mm , 35.5mm , 38.6mm , 44.5mm , 49.5mm , 50.8mm , 60.5mm , 65.5mm , 75.5mm , 99.5mm , etc. we can make tools as your size .
DCR: 1 ohm , it can change DCR as design .
wire : flat 0.12*0.65 wire , can change to : CCAW, EI , SV wire etc.
bobbon: kapton, can change to: paper (small size), TIL , AL etc.