REC-MOUNTS Type2 Saddle Rail Mount for GoPro [REC-B030-GP] for HERO4 HERO3+ HERO3 wearlable camera action cam (for GoPro) Attached diagonal part of rail to out to front saddle. Material 6061T6 aluminum. Anodizing. For GoPro. For HERO4 HERO3+ HERO3 HERO2 HD HERO. Product details(PDF)URL http://www.an-y.com/REC-MOUNTS/REC-B030.pdf Cycle catalog(8M) http://www.an-y.com/img/rec-mount-catalog3.pdf (put no.5 of enc for print) Facebookhttps://www.facebook.com/recmounts