Dear Kiki Boy,
The link is the description for GoPro Hero 5 black. I am doing for GoPro Hero HD (1st version without screen). The lens in GoPro Hero 5 can be opened with a screwdriver but in my case it's totally fixed. I have to cut it with dremel. So its totally different case while comparing with GoPro Hero 5.
Anyways thanks for your help and suggestions. However if you have any suggestions with GoPro Hero HD please let me know.
Thanks so much