DD search coil · Quest Q20, Q40, X5, X10 seriesTop
NEL Super Fly for Quest Q20, Q40, X5, X10
Performance ratings
Specifications
- Size
- 11" × 12"27.9 × 30.5 cm
- Weight
- 14.8 oz420 g
- Coil type
- DD
- Waterproof
- 100%
*Weight is given without the coil cover. Weight may vary slightly depending on the metal detector model. The coil can be used without the plastic cover.

Overview
NEL's latest coil, built on more than 10 years of experience in making search coils and designed around what detectorists asked for. Like the best-selling Tornado, it is the "golden mean" across all key characteristics: depth, metal separation, and sensitivity to large and small targets.
It is very light and optimally sized, which makes it versatile in any search conditions. It responds very well to targets from under 1 g to over 10 kg, at depths no stock coil can reach. It is lighter than any stock coil, so you can search all day without fatigue. It comes with a new, improved coil cover with side reinforcements for greater wear resistance. Recommended as a replacement for the stock coil.
+12–35% depth+20–45% ground coveragevs. stock coil (depending on the metal detector model)
Compatible Quest metal detectors
- Q20
- Q40
- X5
- X10
- Where it works best
- All-round searching in any conditions, from small coins to large objects. The low weight and the reinforced cover are made for long trips and daily work in the field. Works well as your main coil instead of the stock one.
- Recommended for
- Beginners and experienced detectorists.
Features
The coil is fully waterproof and submersible. The body is filled with epoxy resin and finished with a black marine-grade coating, the kind used on yachts and boats, so it can be used without a plastic coil cover. It handles medium and high ground mineralization well.

Cable strain relief
Protects the cable from kinking and also provides complete waterproofing.

Robust mounting bracket
Holds the coil firmly on the stem.

Outer shell
Made of impact-resistant, UV-resistant plastic.

Coil cover
Protects the search coil from damage and chipping.

Wear-resistant coating
Made of composite materials, so the coil can safely be used without a cover if required.

Rubber rings
For a firmer fit of the coil on the lower stem.

Connector
Gold- or silver-plated contacts.

High-strength cable
With a larger conductor cross-section. Made in Germany.

Protective cap
Protects the connector from dirt and dust.

Fixing bolt and hook-and-loop strap
Supplied with the coil.
Every NEL coil is field-tested for detection depth before sale.
2-year warrantyfrom the date of purchaseAll NEL coils for Quest Q20, Q40, X5, X10
Fit Q20, Q40, X5, X10. 10 coils available.

NEL Big
15" × 17" 38 × 43 cm

NEL Attack
15" 38 cm

NEL Storm
13" × 14" 33 × 35.5 cm

NEL Thunder
14.5" × 10.5" 36.8 × 26.7 cm

NEL Tornado
12" × 13" 30.5 × 33 cm

NEL Super Fly
11" × 12" 27.9 × 30.5 cm

NEL Hunter
12.5" × 8.5" 31.7 × 22 cm

NEL Sharpshooter
9.5" × 5.5" 24 × 14 cm

NEL Snake
6.5" × 3.5" 17 × 9 cm

NEL Sharp
5" 13 cm