Wanyifa Titanium Bolt Tc4/Gr5 M4 M7 Socket Head Headless Set Screw for Bicycle Motorcycle 4/10pcs

I had huge fun replacing almost all the nuts & bolts on my bike(s) with titanium ones. I mostly stuck to the brands Taimeili, Wanyifa and XMSJ Titanium Accessories. Through spark testing I can confirm it's at least *a* type of titanium alloy (bright white sparks), and nothing failed until now, so maybe it's actually grade 5 Some of the bolts used: Limit screws (RD, B-Tension and FD support), RD pivott bolt (R8100), various Brake caliper bolts (BR-R8170), Caliper fixing screws (rear), Bleed port & flange nut (ST-R8170), Flange nut (ST-R8170, also works), FD mount, Stem bolts, Saddle Clamp (marketed as "SL7", also works with my Factor Ostro - literally identical dimensions), Chainring bolts (the 10,5mm long version works with R8100 chainrings), M6 Nuts for single pivot rim brakes (13mm long version works great for the STI clamp), Brake pad axle. These are the most 'bike specific' ones, other than that, I've ordered some regular nuts & bolts (e.g. countersunk screws, regular nuts or panhead screws) for various things like computer mounts, ahead caps and so on... Adding everything up, I was able to save around 58g on one bike through titanium bolts for ~115€ (using coins and Choice Day-/Singles Day-/Black Friday-coupons)