2" base. Of course the clamping force won't be great. I have one of these with an NMO mount which I use for a 1/4 wave UHF antenna. This antenna is only 6" long so this small, low profile base is perfect. I have a SO239 mount for a 16" dual band 2m/70 -cm antenna bought, if you use a high antenna on it, yes, it will probably fall over.
Smart column Apple HomePod mini, gray space
50 Review
Portable acoustics HUAWEI Sound Joy, 30 W, volcanic black
78 Review
Nobsound Little Bear MC104 4(1)-In-1(4)-Out 4 Port 3.5Mm Stereo Audio Switcher For Passive Speakers And Headphones - Manual Selector Splitter Box In Black
42 Review
HYZUO 13-Inch Laptop Sleeve Case For MacBook Air And MacBook Pro With Accessory Bag, Mint Green Faux Suede Leather Finish
34 Review
Sony ICFC1TBLACK Alarm Clock Radio
11 Review
JBL Horizon Bluetooth Alarm Clock Radio with Multiple Alarms, Soothing Ambient LED Light, Automatic LCD Display, and Dual USB Charging (White, AM/FM Radio)
41 Review
Experience Dynamic Audio with Panasonic SC-UX100 CD & USB Wireless Bluetooth 300W Mini Hi-Fi System Shelf Stereo
19 Review
Sangean PR-D4W Portable Weather Alert Radio with AM/FM Bandwidth Narrowing and Auto Tracking for Improved Searchability
12 Review