ONGUARDPitbull DT flexion slot, black, 115 mm x 230 mm x 14 mm + 120 cm x 10 mm

Sturdy lock, good size

This is a seriously solid lock. A thief would have to be very determined (and bold) to get through this. Safe Secure diamond rated (the D lock). The included cable is really handy for securing quick release front wheels, helmets etc. It's heavy but worth it. It is also covered in rubber so it doesn't scratch your bike.I would definitely recommend.

Lock itself is great, sturdy but not too heavy.Bike mount bracket is very weak plastic and snapped within a few weeks. Seems to be a common problem

So. Went to check sold gold data base and apparently this model is diamond rated. For under £30? Tbh I'm not fussed if I get issues that others have mentioned. People say the lock can get stuck but it says to keep it lubed and cleaned. Beats paying loads and I keep the lock dry anyway. Obviously avoid wd40 imo

Very good heavy weight lock, despite other reviews it’s working well and has done for the last couple of months. It’s very sturdy and a good price compared to similar ones available. Only thing is the cable wasn’t long enough as I have a XL framed mountain bike, to be able to loop it through the rear wheel, frame and front wheel so bought a Master Lock 10 mm x 1.8 m Looped cable

Best can get .No buy others.This is one to have.

Great price for a serious lump of metal. Gold Secure should be enough for most people. Weighty, so best used for home security, in my opinion, rather than out on the road. In fact I use it to secure my dedicated Zwift PC to my indoor training bike, making theft of either quite the challenge.

This was good value for a platinum rated D-lock. It works as expected. I have only used it undercover so can't comment on how well it would stand up to rain etc. but seems robust enough. Key registration is limited to customers in the USA, although it does come with five keys.