This titanium upgrade for the heating block / hot side from Creality fits the Ender 3 S1, Ender 3 S1 Pro, CR-10 Smart Pro, Sermoon V1, and Sermoon V1 Pro. 

There are 3 varieties of heating block kits listed below. Highlighted version is what is included with this listing.

1. Standard - >260° C with stainless steel heat break (PTFE lined) and 0.4mm brass nozzle. 
2. High Temperature >300° C w/ titanium heat break (all metal) and 0.4mm hardened steel nozzle. 
3. High Temperature Pro >300° C w/ bimetal (titanium, copper) heat break (all metal) and 0.4mm hardened steel nozzle.