Firm. Authentic Christian Louboutin set of ONLY 5 SILVER replacement spikes or studs for most of CL shoes, purses. Comes with little duster. Attention don’t buy fake studs! The monogram "CL" MUST be stamped on the reverse side. Approx 6mm at its widest point. MEASURE your spikes! They are not cheap! Each stud is also supplied with the fixing nail, do not listen do not remove your existing nail!!! It may damage goods! Simply add stud on top of your nail tip. If you lost both - use both pieces!