This is the Anycubic official extruder parts for Kobra S1
Please note there is an updated version of the extruder that has an extra alignment pin for the newer version of strain gauage mount, as photo below. If you received the updated extruder but have the old strain gauage mount, please simply clip off the extra pin in order to fit the new extruder to old strain gauge mount. All the extruder in future production will have the extra pin and we won't be able to stock the old version extruder.

Accessories and DIY parts are consumables, they do wear out after a period of time depends on how frequently being used. They also require users with DIY skills to install which might causing damage if not handled properly. We can only provide limited warranty for accessories once it is being used. In case if you have any problem with our products, please read through our Returns & Refunds policy and contact us within 7 working days of receiving your order.