There are blemishes around the inside surface of the clamping area. GPS mount adapter impossible to mount as face plate cannot securely tightened to prevent handlebar slipping. In the end had to use ggps adapter mounted to handlebar instead. Otherwise stem loks fine on exterior surface.
Quality only grade 4/10. Joint not smooth with flashing on one side. Also, internal surface texture not consistent n uneven.
Product of poor quality. Flash at joint. Most serious bis crack line near screw mounting which could give way n result in serious injury to cyclist.