Description The Mini-Ductor Coil Kit is an accessory for Mini-Ductor. The kit enables the user to heat frozen or stuck nuts and bolts up to 1 1/2" in size. Includes: One 1 3/4" Preformed Coil (IDI-MD99-607) One 1 1/2" Preformed Coil (IDI-MD99-608) One 1 1/4" Preformed Coil (IDI-MD99-609) One 1" Preformed Coil (IDI-MD99-610) Two 7/8" Preformed Coil (IDI-MD99-601) One 3/4" Preformed Coil (IDI-MD99-611) One 7/8" Preformed Coil (IDI-MD99-605)