Morsetto sedile binario montaggio sella bici corsa Fit GoPro Hero 7/6/5/4 HERO ZTTO
Single saddle rail mount weighs only 30g, very lightweight but super strong. Size: 60 30mm. 1 Bicycle Saddle Rail Mount. Bike Bearing Taper BB Bottom Bracket Square Sealed 1.37X24T68MM 10Size VP BC-73.