Axiom 11x7" Mono Searchcoil Axiom 11x7" Mono Searchcoil (stock coil with Axiom package) - includes a coil cover Dimensions: 11" (28 cm) x 7" (18 cm) Can Be Used With: Axiom™ Mono coil provides greatest detection depth in most soil conditions. Solid coil design is more resistant to impact. Front half of solid coil’s top surface provides a large, flat surface to spread a handful of dirt to sift for a tiny nugget. Ideal coil for prospectors and relic hunters for improved gliding/scrubbing over brush, rocks, etc. The Axiom's Iron Check function does not work with Mono coils.