I believe this is the Maypole Strongbox Hitchlock MP5411 (but cannot confirm), if not, it looks to be the same as this in terms of use & dimensions. It has been lightly used, and otherwise kept in storage box when not in use. I have 1 key for it, and potentially 1 x spare (if i can find it).
Below are the specs from the Maypole website for the MP5411 for this usability of this hitchlock;
Applications for the Strongbox
Hitchlock:ALKO AK270 & AK161AK160A/BAK300A
Steelpress ZSK-1300C/E/H/KZSK-1700B/C/D/EZSK-2000B/CBC-3000.1A/B/C/D
Knott KK14-A/B/CK20-A/B
Suitable for use with most braked and unbraked hitches on drawbars of up to 50mm.Note:
Not suitable for raised hitches, hitches fitted with a skid or those with a delta mounting.
Lightweight and user friendly touring or storage productHigh security lock with anti-drill featureIdeal for caravans and trailers with pressed steel couplings
Fits a straight drawbar rather than an A frame
Helps prevent parking theft when fitted hitched
Strongbox features an anti prising lipIdeal for light trailers
£35 (PPFF) posted to UK shores.
Link to Maypole website
Below are the specs from the Maypole website for the MP5411 for this usability of this hitchlock;
Applications for the Strongbox
Hitchlock:ALKO AK270 & AK161AK160A/BAK300A
Steelpress ZSK-1300C/E/H/KZSK-1700B/C/D/EZSK-2000B/CBC-3000.1A/B/C/D
Knott KK14-A/B/CK20-A/B
Suitable for use with most braked and unbraked hitches on drawbars of up to 50mm.Note:
Not suitable for raised hitches, hitches fitted with a skid or those with a delta mounting.
Lightweight and user friendly touring or storage productHigh security lock with anti-drill featureIdeal for caravans and trailers with pressed steel couplings
Fits a straight drawbar rather than an A frame
Helps prevent parking theft when fitted hitched
Strongbox features an anti prising lipIdeal for light trailers
£35 (PPFF) posted to UK shores.
Link to Maypole website