Demon Killer pre-build coils are available in 3 styles from A Friend Indeed.  Each pack comes with 10 x coils and an allen key all packed up in a neat little storage tin.

Clapception Coil: 0.35ohm, 1.5*7.5mm, (0.28*0.8mm)+316L 0.2mm +0.1mm A1

Tri Twisted Clapton Coil: 0.35ohm, 1.7*9mm, Kanthal A1 0.2mm*2*3+316L 0.25mm

Staple Staggered Fused Clapton Coil: 0.30ohm, 1.6*8mm, (Kanthal A1 0.35mm+316L 0.2mm) *2+(0.1*0.5mm)