Specification: 700c

Weight: 30mm 450g 1 piece

40mm 625g 1 pcs

50mm 750g 1 pcs

Dimensions: 30mm outer width 19mm, inner width 13.15mm

40mm outer width 19.5mm, inner width 13.5mm

Outer width 22mm from 50mm, inner width 15.8mm

Number of holes: 16 18 20 21 24 32h holes