Pro ClubLine Fat Chin Bar, SPRCB, Power Rack Attachments
Amazon.com : Yes4All Heavy Duty Wall Mounted Pull Up Bar – Chin Up Bar/Pull Up Bar Wall Mount,30 lbs – Support up to 500 lbs (Black) : Sports & Outdoors
Andrew Heming's Blog: Your Complete Guide to Building a Stronger Grip
The Best Pull-Up Bars | Reviews by Wirecutter
Matt Chan talks the Fat Skinny Bar - YouTube
Should you do pull-ups on a thin or thick bar? - Quora
Rogue 43" Fat/Skinny Pull Up Bar – Total Fitness USA