Hinge to hinge (mm)	Hinge to hinge (inch)	You
121–124mm	4.76–4.88"	XS
125–128mm	4.92–5.04"	S
129–132mm	5.08–5.20"	M
133–136mm	5.24–5.35"	L
137–140mm	5.39–5.51"	XL