https://www.aliexpress.com/item/Sel...e/494803458.html?spm=2114.13010608.0.0.CGPKLo A few days ago I reviewed the Donlis DS53 , and this here is a second set I received from Donlis. Where as that set costs about $35 USD, this set goes for about $24 USD, and the difference in price comes a difference in quality. First, the obvious, the bobbins are plastic, the leads wires has insulated with plastic, and the coils are insulated with a generic polyester film tape. The pole pieces are AlNiCo, so none of that stuff matters once the pickup is in the guitar, but there is something unusual about the "AlNiCo 5"; it's strange to see such low inductances, around 1.9 henries, for 5.8k DC resistance. I was expecting these to be very bright pickups, but much to my surprise, they sounded rather full enough. They do sound really nice. I've yanked stock Fender plastic bobbin AlNiCo pickups out of guitars because because something was underwhelming about them, but that's not the case with these. If you want a set of good Strat pickups for only $24 (not for one pickup, for all three pickups), look no further. Be forewarned though, the neck and middle are 50mm spacing instead of 52mm, so if you want to change the cover color you'd have to order yourself a couple 50mm covers, which are readily available on the Internet. The bridge pickup is 52mm. The narrow spacing actually improves the high and low E pole / string alignment, so this is more of a bonus than drawback. Donlis DS51 Bridge DC Resistance: 6.43K Inductance: 2.249H Calculated C: 137pF (147-10) Coil width: 0.6045" Resonant Peak: dV: 16.1dB f: 8.75kHz (black) Loaded (200k & 470pF): dV: 6.7dB f: 4.17kHz (red) Donlis DS51 Middle DC Resistance: 5.78K Inductance: 1.935H Calculated C: 124pF (134-10) Coil width: 0.6165" Resonant Peak: dV: 16.1dB f: 9.16kHz (green) Loaded (200k & 470pF): dV: 6.9dB f: 4.46kHz (gray) Donlis DS51 Neck DC Resistance: 5.75K Inductance: 1.911H Calculated C: 141pF (151-10) Coil width: 0.5850" Resonant Peak: dV: 15.6dB f: 9.37kHz (pink) Loaded (200k & 470pF): dV: 7.0dB f: 4.52kHz (black) Pole piece flux density: 900G - 1100G Bode plot: It's unusual to see such low inductances of 1.9 henries for a 5.8k DC resistance. By comparison, a Fender CS 69 measures inductances of 2.2H for DC resisitances of 5.4k, that's more inductance for less coil. I checked a little loose piece of coil wire around the eyelets and it did measure the correct diameter for 42AWG, so process of elimination puts the blame for a low inductance on the AlNiCo pole pieces. This means that the AlNiCo 5 in these Donlis singles have a lower permeability than typical AlNiCo 5 pole pieces. The dB at resonance is also a little higher than typical, at 16dB, as opposed to 15dB, which probably also owes to a lower permeability. The Gauss strength of the AlNiCo pole pieces measures good, so there is no problem there. The capacitance measures between 120-140pF are not great by boutique "hand wound" standards, but they're consistent with the capacitances observed in most of Fender's stock Stratocaster pickups.